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Blue color
Indigo is a term used for a number of hues in the region of blue. The word comes from the ancient dye of the same name. The term "indigo" can refer to
Indigo
Indian airline
IndiGo is an Indian low-cost hybrid airline headquartered in Gurgaon, Haryana. It is the largest airline in India by passengers carried, with a 64.2% domestic
IndiGo
Species of bird
The indigo bunting (Passerina cyanea) is a small seed-eating bird in the cardinal family, Cardinalidae. It is migratory, ranging from southern Canada to
Indigo_bunting
American folk rock duo
Indigo Girls are an American folk rock music duo, consisting of Amy Ray and Emily Saliers. The two met in elementary school and began performing together
Indigo_Girls
Chemical compound, food additive and dye
Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus
Indigo_dye
Topics referred to by the same term
Look up Indigo or indigo in Wiktionary, the free dictionary. Indigo is a color between blue and violet. Indigo or INDIGO may also refer to: IndiGo, an airline
Indigo_(disambiguation)
2005 action-adventure game
Fahrenheit (known as Indigo Prophecy in North America) is an action-adventure game developed by Quantic Dream and published by Atari for Windows, PlayStation
Indigo_Prophecy
Children who are believed to possess special traits or abilities
Indigo children, according to a pseudoscientific New Age concept, are children who are believed to possess special, unusual, and sometimes supernatural
Indigo_children
Australian indie rock musician
Indigo Sparke is an Australian indie rock musician from Sydney. Sparke announced her debut album in 2020, with plans to release it the following year.
Indigo_Sparke
Species of snake
The eastern indigo snake (Drymarchon couperi) is a species of large, nonvenomous snake in the subfamily Colubrinae of the family Colubridae. Native to
Eastern_indigo_snake
1859 peasant rebellion in Bengal against European Indigo planters
The Indigo revolt (or Nil bidroha; Bengali: নীল বিদ্রোহ) was a peasant movement and subsequent uprising of indigo farmers against the indigo planters,
Indigo_revolt
Spanish singer, songwriter and dancer
Miriam Doblas Muñoz (born 1 April 1992), known professionally as Lola Índigo, is a Spanish singer and dancer. She rose to fame in 2017, when she participated
Lola_Índigo
Compact sedan
the Indigo, called Tata Indigo Manza to distinguish it from the first generation which remained in production. The first generation of the Indigo was
Tata_Indigo
Gravitational wave observatory unit, india
INDIGO or IndIGO (Indian Initiative in Gravitational-wave Observations) is a consortium of Indian gravitational wave physicists. It is an initiative to
Indian Initiative in Gravitational-wave Observations
Indian_Initiative_in_Gravitational-wave_Observations
List of aircraft operated by IndiGo
IndiGo is the largest airline of India since its establishment in 2006. It is also the second largest Asian airline and the world's ninth largest airline
IndiGo_fleet
DC comics organization
The Indigo Tribe is a fictional organization that appears in DC Comics publications, primarily those of the Green Lantern series. In the DC Universe, it
Indigo_Tribe
Edible fungus
Lactarius indigo, commonly known as the indigo milk cap, indigo milky, indigo lactarius, blue lactarius, or blue milk mushroom, is a species of agaric
Lactarius_indigo
Species of legume
also called true indigo, is a species of plant from the bean family that was one of the original sources of indigo dye. True indigo is a shrub 1–2 metres
Indigofera_tinctoria
Genus of legumes
Baptisia (wild indigo, false indigo) is a genus in the legume family, Fabaceae. They are flowering herbaceous perennial plants with pea-like flowers, followed
Baptisia
Blue dye derived from indigo
Indigo carmine, or 5,5′-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by aromatic sulfonation,[citation needed] which renders
Indigo_carmine
First season of the ''Pokémon'' animated television series
Pokémon: Indigo League is the first season of the Pokémon anime series and of Pokémon the Series: The Beginning, known in Japan as Pocket Monsters (ポケットモンスター
Pokémon:_Indigo_League
Workstations family by Silicon Graphics
The Indigo, introduced as the IRIS Indigo, is a line of workstation computers developed and manufactured by Silicon Graphics, Inc. (SGI). SGI first announced
SGI_Indigo
2018 single by Justhis, Kid Milli, Noel, Yang Hong-won
"Indigo" (stylized as "IndiGO") is a song by South Korean rappers Justhis, Kid Milli, Noel, and Yang Hong-won. It was released on June 24, 2018, by Indigo
Indigo (Justhis, Kid Milli, Noel, and Yang Hong-won song)
Indigo_(Justhis,_Kid_Milli,_Noel,_and_Yang_Hong-won_song)
Index of plants with the same common name
False indigo is a common name for several plants related to indigo; it may refer to: Amorpha, particularly Amorpha fruticosa, native to North America Baptisia
False_indigo
American singer-songwriter (born 1997)
Indigo De Souza (born July 1, 1997) is an American singer-songwriter from Spruce Pine, North Carolina. Her third album, All of This Will End, was released
Indigo_De_Souza
2026 studio album by Bruce Hornsby
Indigo Park is an album by the American singer-songwriter Bruce Hornsby. It was released on April 3, 2026, by Zappo Productions with distribution helmed
Indigo_Park
Species of flowering plant in the pea family
Amorpha nana (dwarf indigo, dwarf indigobush, dwarf false indigo, fragrant indigo-bush, fragrant false indigo, dwarf wild indigo) is a 1–3-foot (30–91 cm)
Amorpha_nana
Canadian boycott campaign
Indigo Kills Kids is a Canadian-based grassroots Pro-Palestinian campaign to boycott the book retailer Indigo. The campaign accuses Indigo of "oppression
Indigo_Kills_Kids
Species of flowering plant in the pea family
Baptisia australis, commonly known as blue wild indigo or blue false indigo, is a flowering plant in the family Fabaceae (legumes). It is a perennial
Baptisia_australis
2019 studio album by Chris Brown
Indigo is the ninth studio album by the American singer Chris Brown, released on June 28, 2019, by RCA Records. His second double album, it is a follow-up
Indigo_(Chris_Brown_album)
Song
"Mood Indigo" is a jazz song with music by Duke Ellington and Barney Bigard and lyrics by Irving Mills. Although Irving Mills—Jack Mills's brother and
Mood_Indigo
Indigo Jam Unit (stylised as indigo jam unit) was a Japanese jazz band formed in Osaka, Japan in 2005. Yoshichika Tarue (樽栄嘉哉), born July 9, 1974 - piano
Indigo_Jam_Unit
Canadian book and gift retailer
Indigo Books & Music Inc. is a Canadian bookstore chain. Indigo operates stores in all ten provinces and one territory, and through a website offering
Indigo_Books_and_Music
1994 studio album by Joni Mitchell
Turbulent Indigo is the fifteenth album by Canadian singer-songwriter Joni Mitchell, released in 1994. The album won a Grammy Award for Best Pop Album
Turbulent_Indigo
Comic book superhero
Brainiac 8 (Indigo) is a superhero character appearing in American comic books published by DC Comics. She first appeared in Titans/Young Justice: Graduation
Brainiac_8
Japanese band
The Indigo is a Japanese band originally composed of Miki Taoka (田岡 美樹, Taoka Miki) on vocals, Yuichi Ichikawa (市川 裕一, Ichikawa Yūichi) on composition
The_Indigo
Economic concept by businessman Mikhail Fridman
The Indigo Era (or Indigo economies) is a concept publicized by businessman Mikhail Fridman, describing what he views as an emerging new era of economies
Indigo_Era
Canadian Gaza war protest group
The Indigo 11 are a group of eleven protestors against the Gaza war in Canada who were arrested in November 2023 following vandalism of an Indigo Books
Indigo_11
American private equity firm
Indigo Partners, LLC is an American private equity firm which has a controlling interest in the American Frontier Airlines and Chilean low-cost JetSmart
Indigo_Partners
Topics referred to by the same term
Chinese indigo in Wiktionary, the free dictionary. Chinese indigo may refer to: Isatis indigotica, a kind of woad Indigofera amblyantha, a kind of indigo plant
Chinese_indigo
Genus of snakes
commonly known as indigo snakes or cribos, found in the Southeastern United States, Mexico, Central America, and South America. Indigo snakes are large
Drymarchon
Topics referred to by the same term
"Mood Indigo" is a song by Duke Ellington. Mood Indigo may also refer to: Mood Indigo (album), a 1989 album by jazz saxophonist Frank Morgan Mood Indigo (festival)
Mood_Indigo_(disambiguation)
2013 studio album by the Black Angels
Indigo Meadow is the fourth studio album by American rock band the Black Angels. It was released on April 2, 2013, by Blue Horizon. "Indigo Meadow" debuted
Indigo_Meadow
American agricultural technology company
Indigo Agriculture is a Boston, Massachusetts-based agricultural technology company that works with plant microbes, aiming to improve yields of cotton
Indigo_Agriculture
Hotel chain
Indigo Indigo Palau Hotel Indigo Hastings, Barbados. Hotel Indigo Antwerp Hotel Indigo Berlin Hotel Indigo Durham Hotel Indigo Edinburgh Hotel Indigo
Hotel_Indigo
Temporary body art
Indigo fingers, also known as elukami, is a form of temporary body art and cultural expression that involves the application of indigo dye, derived from
Indigo_fingers
Dye extracted from plant or animal sources
conducted, and even when a dye such as indigo blue is detected it is impossible to determine which of several indigo-bearing plants was used. Nevertheless
Natural_dye
Species of plant
flowering plant in the buckwheat family. Common names include Chinese indigo, Japanese indigo and dyer's knotweed. It is native to Southern China and Vietnam
Persicaria_tinctoria
Record label
The Indigo Music Corporation was a Nashville-based company that was the umbrella organization for the Audiograph, Brylen Records, Indigo Music, and Phonorama
Indigo_Music_Corporation
The airline operates over more than 2700 flights daily. As of June 2026, IndiGo flies to a total of 144 destinations, including 98 domestic destinations
List_of_IndiGo_destinations
Indian paint company
Indigo Paints Limited is an Indian paint company that is headquartered in Pune, Maharashtra, and has five manufacturing facilities that are located at
Indigo_Paints
Name list
Indigo is a given name often used in reference to the color, a shade between the colors blue and violet. Deep blue indigo dye was originally derived from
Indigo_(given_name)
Species of legume
longbract wild indigo, long-bract wild indigo, long-bracted wild indigo, plains wild indigo, cream false indigo, or cream wild indigo, is a perennial
Baptisia_bracteata
2022 studio album by RM
Indigo is the debut studio album by South Korean rapper RM of BTS, released on December 2, 2022, through Big Hit Music. The album marks the rapper's first
Indigo_(RM_album)
Dark shade of blue
French sailor in dark blue uniform (c1843) Indigo dye is the color which is called Añil (the Spanish word for "indigo dye") in the Guía de coloraciones (Guide
Navy_blue
Fictional character
Inigo Montoya is a fictional character in William Goldman's 1973 novel The Princess Bride. In Rob Reiner's 1987 film adaptation, he was portrayed by Mandy
Inigo_Montoya
My Indigo is a musical project by Dutch singer and songwriter Sharon den Adel. The project was announced in late 2017. On late 2017 and with no recent
My_Indigo
Species of fish
Hypoplectrus indigo, the indigo hamlet, is a species of marine ray-finned fish, a sea bass from the family Serranidae. It is found in the central western
Hypoplectrus_indigo
Airport serving Bengaluru, Karnataka, India
2024. "Indigo Domestic Expansion". "Qatar Airways and IndiGo reactivate strategic cooperation". 19 April 2022. Retrieved 21 April 2022. "Indigo to operate
Kempegowda International Airport
Kempegowda_International_Airport
Japanese rock band
indigo la End is a Japanese rock band led by vocalist and songwriter Enon Kawatani. The band released their debut extended play in 2012 with independent
Indigo_la_End
1983 song by Peter Nagy
"Profesor Indigo" (English: Professor Indigo) is a song written by Slovak musician Peter Nagy released on Opus Records in 1983. The first time Nagy recorded
Profesor_Indigo
Species of plant
Indigofera australis, the Australian indigo or Austral indigo, is a species of leguminous shrub in the genus Indigofera (family Fabaceae). The genus name
Indigofera_australis
French publication company
Indigo Publications is a French company founded in 1981 that publishes four news websites dedicated to specialized business sectors: Intelligence Online
Indigo_Publications
2005 novel by Cathy Cassidy
Indigo Blue is a 2005 children's novel written by British author Cathy Cassidy. The book is about a girl named Indigo and how her life changes as she
Indigo_Blue
Shade of blue
was derived from crushed indigo plants. Indigo was a common source for haint blue prior to the American Revolution, when indigo was a common crop for plantations
Haint_blue
Indigo Wireless was a regional wireless telecommunications company in northern Pennsylvania. Based in Wellsboro, it was often the sole provider in its
Indigo_Wireless
Japanese professional baseball team
Indigo Socks (徳島インディゴソックス, Tokushima Indigo Sokkusu) are a baseball team in the Shikoku Island League plus of Japan. Established in 2005, the Indigo Socks
Tokushima_Indigo_Socks
Annual cultural festival of the Indian Institute of Technology Bombay
Mood Indigo, otherwise known as MoodI or MI, is the cultural and signature festival of the Indian Institute of Technology Bombay. Mood Indigo was held
Mood_Indigo_(festival)
Genus of plants
the dye indigo. Scraps of Indigo-dyed fabric likely dyed with plants from the genus Indigofera discovered at Huaca Prieta predate Egyptian indigo-dyed fabrics
Indigofera
Hotel in Edinburgh, Scotland
Hotel Indigo Edinburgh is a hotel on Princes Street, Edinburgh. In 2016 it became part of the Hotel Indigo chain. "1899, Royal British Hotel, Princes St
Hotel_Indigo_Edinburgh
1970 studio album by Jean-Jacques Perrey
Moog Indigo is the ninth studio album by the French electronic music pioneer Jean-Jacques Perrey, released in May, 1970 on the Vanguard Records label.
Moog_Indigo
Graphical printing division of HP Inc
HP Indigo Division is a division of HP Inc.'s Graphic Solutions Business. It was founded in 1977 in Israel and acquired by Hewlett-Packard in 2001 (over
HP_Indigo_Division
Canceled Greater Boston urban rail transit service
The Indigo Line was a proposed urban rail transit service of the Massachusetts Bay Transportation Authority (MBTA) that would have incorporated parts of
Indigo_Line
American actress and DJ (born 1984)
Indigo (born Alyssa Ashley Nichols, June 25, 1984, Los Angeles) is an American actress and DJ. She is best known for her roles as Rona, one of the vampire
Indigo_(actress)
1958 studio album by Duke Ellington
Ellington Indigos is a 1958 jazz album by Duke Ellington. The stereo CD reissue released by Columbia (CK 4444) in 1987 contains a track listing and cover
Ellington_Indigos
American singer-songwriter
and Let Go Letters (2025). Anna co-wrote and was featured on the song "Indigo" (2024) by Sam Barber, which reached number 8 on the Hot Country Songs chart
Avery_Anna
2018 studio album by My Indigo
My Indigo is the debut studio album by Dutch singer and songwriter Sharon den Adel with her solo musical project My Indigo. It was released on 20 April
My_Indigo_(album)
Indigo Swing, later shortened to Indigo, was an American retro swing band of the mid-late 1990s, based out of San Francisco, California. They released
Indigo_Swing
Canadian baseball player (born 1998)
Indigo Dunham Diaz (born October 14, 1998) is a Canadian professional baseball pitcher in the Arizona Diamondbacks organization. Diaz played Little League
Indigo_Diaz
Acronym for rainbow colors
commonly described as making up a rainbow: red, orange, yellow, green, blue, indigo, and violet. There are several mnemonics that can be used for remembering
ROYGBIV
Motor vehicle
The Indigo 3000 is a Swedish sports car produced by Jösse Car from 1996 to 2000. 44 working cars were produced and it was the only car manufactured by
Indigo_3000
Species of bird
The Indigo-banded kingfisher (Ceyx cyanopectus) is a species of bird in the family Alcedinidae. It is endemic to the Philippines found on the islands of
Indigo-banded_kingfisher
2023 video game
Teal Mask, was released on September 13, 2023, and the second part, The Indigo Disk, was released on December 14, 2023. An epilogue, Mochi Mayhem, was
The Hidden Treasure of Area Zero
The_Hidden_Treasure_of_Area_Zero
Colour between violet and cyan on the visible spectrum of light
coloured with the vegetable dye woad until it was replaced by the finer indigo from America. In the 19th century, synthetic blue dyes and pigments gradually
Blue
American singer-songwriter (born 1999)
and the Water, respectively. In 2018, McAlpine released her debut EP, Indigo, which she later took down, making it unavailable on most streaming platforms
Lizzy_McAlpine
Canadian pay-per-view TV service
Canal Indigo is a Canadian English and French language pay-per-view and Near Video on Demand provider owned by Vidéotron. The service was launched on August
Canal_Indigo
Radio Station
Indigo 91.9 FM is India's first and longest running international radio network operating in Bangalore and Goa. The channel is a part of Asianet News Media
Indigo_91.9_FM
1997 studio album by Limp Bizkit
me, I don't owe you a thing." "Indigo Flow", named after the studio Three Dollar Bill, Y'all was recorded in (Indigo Ranch Studio), was Limp Bizkit's
Three_Dollar_Bill,_Y'all
2013 French film
Mood Indigo (French: L'écume des jours, lit. "The froth of days") is a 2013 French surrealistic romantic science fantasy tragedy film co-written and directed
Mood_Indigo_(film)
English singer (born 1995)
Beatles (1968) 1990s Longing in Their Hearts – Bonnie Raitt (1995) Turbulent Indigo – Joni Mitchell (1996) Falling into You – Celine Dion (1997) Hourglass –
Dua_Lipa
Airport serving Hyderabad, Telangana, India
ISSN 1466-8718. OCLC 41608313. "Indigo frequency changes". "Indigo Hyderabad domestic expansion". "Indigo Ahmedabad frequency changes". "IndiGo to start new flight
Rajiv Gandhi International Airport
Rajiv_Gandhi_International_Airport
American singer-songwriter and actress (born 2003)
Beatles (1968) 1990s Longing in Their Hearts – Bonnie Raitt (1995) Turbulent Indigo – Joni Mitchell (1996) Falling into You – Celine Dion (1997) Hourglass –
Olivia_Rodrigo
International airport serving Delhi, India
work, GoAir and select flights of IndiGo were moved to Terminal 2 as well as select flights of SpiceJet and IndiGo to Terminal 3.[citation needed] In
Indira Gandhi International Airport
Indira_Gandhi_International_Airport
Concept car developed by Ford in 1996
The Ford Indigo was a concept car developed by American automobile manufacturer Ford for the 1996 auto show circuit and designed by Ford's design and technical
Ford_Indigo
Local government area in Victoria, Australia
The Shire of Indigo, a local government area (LGA) in the Hume region of Victoria, Australia, lies in the north-east part of the state. It covers an area
Shire_of_Indigo
Species of butterfly
plants include wild indigo, wild blue indigo, lupine, false lupine, and crown vetch. "NatureServe Explorer 2.0 Erynnis baptisiae Wild Indigo Duskywing". explorer
Erynnis_baptisiae
Index of plants with the same common name
The common name indigo bush can refer to plants in any of several genera in the legume family, including: Amorpha, native to North America Dalea Psorothamnus
Indigo_bush
Discography of Spanish recording artist
The discography of Spanish recording artist Lola Índigo consists of four studio albums, one extended play, forty-seven singles (including one as a featured
Lola_Índigo_discography
American airline
Indigo Airlines was an American airline headquartered in Chicago, Illinois. It was the first business jet airline, founded in 1997 by Matt Andersson, John
Indigo Airlines (American airline)
Indigo_Airlines_(American_airline)
Indian–Swiss surface-to-air missile project
Project Indigo was started by India in 1962. An agreement was signed between India and Switzerland to develop an intermediate-range surface-to-air missile
Project_Indigo
INDIGO
INDIGO
Girl/Female
Australian, Greek, Latin
Dark Blue Color
Boy/Male
Tamil
Champion, Blue, Treasure, A mountain, Indigo, Sapphire
Female
Arthurian
, indigo; powder-blue (?).
Boy/Male
Tamil
Champion, Blue, Treasure, A mountain, Indigo, Sapphire
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : habitational name from Picquigny in Somme, named with a Germanic personal name, Pincino (of obscure derivation) + the Latin locative suffix -acum.A prominent SC family of English ancestry, Pinckneys were living in Charleston by the 18th century, including Eliza Lucas Pinckney (1722–93), who introduced indigo to the colony in 1738. Her sons were prominent in politics, with Charles Pinckney, George Washington’s aide and candidate for U.S. president in 1804 and 1808, and Thomas Pinckney, governor of SC.
Girl/Female
French, Hebrew, Indian, Sanskrit, Sikh
Success; Indigo; A Goddess
Boy/Male
Hindu
Champion, Blue, Treasure, A mountain, Indigo, Sapphire
Male
English
English unisex name, derived from vocabulary word indigo, from Greek indikon, INDIGO means "blue dye from India."Â
Boy/Male
Hindu
Champion, Blue, Treasure, A mountain, Indigo, Sapphire
INDIGO
INDIGO
Male
Finnish
Finnish form of Greek Ioannes (Latin Johannes), JONI means "God is gracious."
Girl/Female
Hindu
Goddess Durga
Boy/Male
Tamil
The polar star, Constant, Faithful, Firm
Girl/Female
Indian
Flute
Girl/Female
Arabic, Muslim
Shine; Brilliant; Glittering
Boy/Male
Tamil
Girl/Female
Muslim/Islamic
Same as Mahreen
Female
Arthurian
, stillness of the sea (?).
Boy/Male
Indian, Punjabi, Sikh
Divine Knowledge
Boy/Male
Tamil
Origin
INDIGO
INDIGO
INDIGO
INDIGO
INDIGO
n.
The art or method of determining the coloring power of indigo.
n.
An indigo-blue variety of quartz.
n.
Any plant which habitually breaks away from its roots in the autumn, and is driven by the wind, as a light, rolling mass, over the fields and prairies; as witch grass, wild indigo, Amarantus albus, etc.
a.
Pertaining to, or derived from, indigo; as, indigotic acid, which is also called anilic or nitrosalicylic acid.
n.
The art or process of making a compound by putting the ingredients together, as contrasted with analysis; thus, water is made by synthesis from hydrogen and oxygen; hence, specifically, the building up of complex compounds by special reactions, whereby their component radicals are so grouped that the resulting substances are identical in every respect with the natural articles when such occur; thus, artificial alcohol, urea, indigo blue, alizarin, etc., are made by synthesis.
pl.
of Indigo
n.
A body identical with indigo blue, occasionally found in the urine in degeneration of the kidneys. It is readily formed by oxidation or decomposition of indican.
n.
A constituent of human faeces formed in the small intestines as a product of the putrefaction of albuminous matter. It is also found in reduced indigo. Chemically it is methyl indol, C9H9N.
n.
Indigo red, a product of the decomposition, or oxidation, of indican. It is sometimes found in the sediment of pathological urines. It is soluble in ether or alcohol, giving the solution a beautiful red color. Also called indigrubin.
n.
An instrument for ascertaining the strength of an indigo solution, as in volumetric analysis.
n.
A dyestuff of the induline group, made from aniline, and used as a substitute for indigo in dyeing wool and silk a violet-blue or a gray-blue color.
n.
A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, Isatis tinctoria, Indigofera tinctoria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican.
n.
A genus of plants of the Milkweed family, mostly woody climbers with fragrant flowers, several species of which furnish valuable fiber, and one species (Marsdenia tinctoria) affords indigo.
n.
A green or blue pigment produced by Peziza in certain kinds of decayed wood, as the beech, oak, birch, etc., and extracted as an amorphous powder resembling indigo.
n.
See Indigo blue, under Indigo.
n.
A genus of leguminous plants having many species, mostly in tropical countries, several of them yielding indigo, esp. Indigofera tinctoria, and I. Anil.
n.
See Indigo white, under Indigo.
a.
Having the color of, pertaining to, or derived from, indigo.
a.
Of, pertaining to, or designating, a sulphonic acid obtained, as a blue solution, by dissolving indigo in sulphuric acid; -- formerly called also cerulic sulphuric acid, but properly called indigo-disulphonic acid.
n.
A blue dyestuff, or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing.