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Look up operculum or opercular in Wiktionary, the free dictionary. Operculum may refer to: Operculum (brain), the part of the brain covering the insula
Operculum
Feature of gastropod anatomy
An operculum (Latin for 'cover, covering'; pl. opercula or operculums) is a corneous or calcareous anatomical structure like a trapdoor that exists in
Operculum_(gastropod)
Anatomical structure of animals
An operculum is an anatomical feature, a stiff structure resembling a lid or a small door that opens and closes, and thus controls contact between the
Operculum_(animal)
Part of the anatomy of the brain
brain anatomy, an operculum (Latin, meaning "little lid") (pl.: opercula), may refer to the frontal, temporal, or parietal operculum, which together cover
Operculum_(brain)
Bones in a fish protecting the gills
The operculum is a series of bones found in bony fish and chimaeras that serves as a facial support structure and a protective covering for the gills;
Operculum_(fish)
Inflammation of the soft tissues surrounding the crown of a partially erupted tooth
follicle. The soft tissue covering a partially erupted tooth is known as an operculum, an area which can be difficult to access with normal oral hygiene methods
Pericoronitis
Botanical term for a protective covering, hood or lid
In botany, an operculum (pl.: opercula) or calyptra (from Ancient Greek καλύπτρα (kalúptra) 'veil') is a cap-like structure in some flowering plants,
Operculum_(botany)
Facial structure found in birds and various other animal clades
birds are covered by an operculum (plural opercula), a membraneous, horny or cartilaginous flap. In diving birds, the operculum keeps water out of the
Beak
In the bryozoan order Cheilostomatida, the operculum is a calcareous or chitinous lid-like structure that protects the opening through which the polypide
Operculum_(bryozoa)
Respiratory organ in aquatic animals
contain actual gills. Usually no spiracle or true operculum is present, though many species have operculum-like structures. Instead of internal gills, they
Gill
Deep-sea gastropod
2 mm. An operculum of a juvenile snail. The scale bar is 1 mm. An operculum of an adult snail. The scale bar is 1 mm. Adult snails with operculum indicated
Scaly-foot_gastropod
Component of the eye in elasmobranchs
The operculum papillare is the iris found in the eyes of elasmobranchs (skates, sharks and rays). It can undergo pupillary light reflex to such an extent
Operculum_papillare
Palaeozoic lophophorates with small conical shells
main conical shell (previously referred to as a 'conch') and a cap-like operculum. Some also had two curved supports known as helens They are calcareous
Hyolitha
Made out of a substance similar to hooves or horns
the operculum of a snail, a gastropod mollusc. Not all gastropods have opercula, but in the great majority of those that do have one, the operculum is
Corneous
Medical condition
formation of lesions on both sides of the anterior or posterior region of the operculum. In contrast, the unilateral form is rare and is caused by the formation
Foix–Chavany–Marie_syndrome
Large tooth at the back of the human mouth
Inflamed excess gum flap (inflamed operculum marked by green arrow) over wisdom tooth
Wisdom_tooth
Conchological record book
shell specimens of various marine molluscan taxa. A successor to the Lost Operculum Club List of Champions (1950–1987) and World Size Records (1964–1990)
Registry of World Record Size Shells
Registry_of_World_Record_Size_Shells
Unknown biblical substance used in incense
fingernail-like operculum, or trap door, of certain sea snails, such as Strombus lentiginosus, Murex anguliferus, and Onyx marinus. It may be the operculum of a
Onycha
Genus of flowering plants
that have oil glands. The sepals and petals are fused to form a "cap" or operculum over the stamens, hence the name from Greek eû 'well' and kaluptós 'covered'
Eucalyptus
Species of gastropod
ramshorn apple snail, is a species of large freshwater snail with an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snail
Marisa_cornuarietis
Genus of molluscs
Turbo is a genus of large sea snails with gills and an operculum, marine gastropod molluscs in the family Turbinidae, the turban snails. Turbo is the
Turbo_(gastropod)
Family of gastropods
snails. Members of the Rissoidae are very small in size and possess an operculum. Rissoidae are found worldwide. They live on sandy or gravel bottoms among
Rissoidae
Common name for snails that normally live in saltwater
Acanthina punctulata has been disturbed, and has retracted into the shell, using its claws to bar the entrance in the same way the snail used its operculum.
Sea_snail
Species of gastropod
Pomacea maculata is a species of large freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails
Pomacea_maculata
Brain structure responsible for perception of taste
substructures: the anterior insula on the insular lobe and the frontal operculum on the inferior frontal gyrus of the frontal lobe. Because of its composition
Gustatory_cortex
Genus of sea snails
Calliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the Calliostoma
Calliostoma
Family of gastropods
calcareous operculum readily distinguishing them from the somewhat similar Trochidae or top snails, which have a corneous operculum. This strong operculum serves
Turbinidae
Part of the body of a gastropod or snail
cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the aperture, which provides
Gastropod_shell
Family of gastropods
snails, are a family of freshwater snails with gills and a protective lid (operculum). Their family tree is complex, and genetic evidence suggesting some species
Viviparidae
Part of an eye
the beluga whale. In these species, it is usually called the operculum or the operculum pupillare. In the bottlenose dolphin, it has the function of allowing
Pupil
Portion of the mammalian cerebral cortex
area overlying the insula toward the lateral surface of the brain is the operculum (meaning lid). The opercula are formed from parts of the enclosing frontal
Insular_cortex
Superfamily of sea snails
superfamily of small to very large vetigastropod sea snails with gills and an operculum. Species within this superfamily have nacre as the inner shell layer.
Trochoidea_(superfamily)
Class of mosses
operculum falls off. In other groups of mosses, the capsule is either nematodontous with an attached operculum, or else splits open without operculum
Bryopsida
Species of gastropod
"common tower shell" is a species of medium-sized sea snails with an operculum, marine gastropod mollusks in the family Turritellidae. This species occurs
Turritella_communis
Species of gastropod
with gills and an operculum, an aquatic gastropod mollusk in the family Viviparidae. The name "trapdoor snail" refers the operculum, an oval corneous
Margarya_chinensis
Species of mollusc
whelk or sea snail, a marine gastropod mollusc that has gills and an operculum, and is classified within the family Littorinidae, the periwinkles. This
Common_periwinkle
Species of eucalyptus
curved to rounded operculum 3–7 mm (0.12–0.28 in) long; Eucalyptus camaldulensis Dehnh. subsp. camaldulensis has a strongly beaked operculum, incurved or irregularly
Eucalyptus_camaldulensis
Genus of gastropods
Pila is a genus of large freshwater snails with an operculum, African and Asian apple snails, aquatic gastropod mollusks in the family Ampullariidae,
Pila_(gastropod)
Aquatic animal phylum having cnidocytes
usually hollow and delivers chemicals from the cnida to the target. An operculum (lid) over the end of the cnida. The lid may be a single hinged flap or
Cnidaria
Family of annelids
differ from other sabellid tube worms in that they have a specialized operculum that blocks the entrance of their tubes when they withdraw into the tubes
Serpulidae
Rabbinic views on the incense formula used in Jewish ritual
therewith the operculum, and thereby improve it. Maharitz, citing the Kol Bo, says that the purport of using this soap was to whiten the operculum withal, since
Incense offering in rabbinic literature
Incense_offering_in_rabbinic_literature
Species of gastropod
Viviparus viviparus is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails
Viviparus_viviparus
Species of marine tube worm
movement of the operculum can abrade the coral tissue, and that mortality of the coral tissue is enhanced when the worm's operculum hosts filamentous
Spirobranchus_giganteus
Species of gastropod
Taia naticoides is a species of a freshwater snail with an operculum and a gill. It is an aquatic gastropod mollusc in the family Viviparidae - commonly
Taia_naticoides
Organ that allows fish to breathe underwater
side. This opening is hidden beneath a protective bony cover called the operculum. Juvenile bichirs have external gills, a very primitive feature that they
Fish_gill
Genus of fishes
consists of the skull (formed from loosely connected bones), eyes, mouth, operculum, gills, and a pair of nostrils (which has no connection to the oral cavity)
Perch
Species of gastropod
addition to the bubble raft, only the veliger, or larval stage, has an operculum, and the shell is paper-thin to allow the animal to float upside down
Janthina_janthina
Species of Gastropoda
assassin snail or bumblebee snail, is a species of freshwater snail with an operculum, an aquatic gastropod in the family Nassariidae, most of which are marine
Anentome_helena
Roofing bones of the skull
and behind each eye. The skull proper was joined by the bones of the operculum. The skull itself was composed rather loosely, with a joint between the
Skull_roof
Extinct genus of scorpion
underside of the mesosoma possesses a bilobed and laterally elongated genital operculum (a covering of the gonopore), followed by pectines (comb-like sensory
Pulmonoscorpius
Taking in the meaning of letters or symbols
phonological processing deficits are associated with damage to the left frontal operculum". Cortex. 42 (4): 624–643. doi:10.1016/S0010-9452(08)70399-X. PMID 16881271
Reading
Species of gastropod
Pila globosa is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails. (Described
Pila_globosa
Species of fish
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Lophius_piscatorius
Animals that feed by straining food from water
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Filter_feeder
Fish that can generate electric fields
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Electric_fish
Family of snails
brown, entirely corneous, circular, multispiral operculum which fits the aperture snugly. The operculum is formed of numerous gradually increasing whorls
Trochidae
Family of sea snails
500 mm. They are marine gastropod mollusks. Most of the species have no operculum. This family of sea snails are found mainly in tropical seas, though some
Volutidae
Family of gastropods
Baicaliidae is a family of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea. (Original
Baicaliidae
Reproductive physiology of fishes
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Fish_reproduction
Species of gastropod
Tudorella sulcata is a species of land snail which has an operculum, a terrestrial gastropod mollusk in the family Pomatiidae. The species (T. s. sulcata)
Tudorella_sulcata
Species of fish
T. draco consists of one spine on each operculum and five to eight dorsal spines. The spines on the operculum point towards the cauda, or tail, and are
Greater_weever
Genus of gastropods
known as the river snails, is a genus of large, freshwater snails with an operculum, aquatic gastropod molluscs. They are primitive members of the clade Caenogastropoda
Viviparus
Order of sea snails
vetigastropods. It includes recent and extinct sea snails with gills and an operculum. Extant trochomorphs stem from a large, archaic clade. According to Uribe
Trochida
Order of mosses
teeth, the peristome, which before ripeness is closed by a beak-shaped operculum. The enlarged venter or calyptra is cap-shaped and smooth. Hypnales are
Hypnales
Species of gastropod
illustration of a live Cittarium pica, showing the inner surface of the operculum at the top Five views of a shell of Cittarium pica Scientific classification
Cittarium_pica
Informal group of gastropods
converted into a vascularised lung. Most species have a shell, but no operculum, although the group does also include several shell-less slugs. Pulmonates
Pulmonata
Index of animals with the same common name
containing feather duster worms Serpulidae, sabellids with a specialized operculum Phoronida, the phylum containing horseshoe worms Microconchida, an order
Tube_worm
Family of venomous sea snails
more flattened cone. The aperture is elongated and narrow with the sharp operculum being very small. The outer lip is simple, thin, and sharp, without a
Cone_snail
Species of gastropod
Austropyrgus pusillus is a species of small freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the Hydrobiidae family
Austropyrgus_pusillus
Family of gastropods
Assimineidae is a family of small snails, also known as palmleaf snails, with an operculum, gastropod mollusks or micromollusks in the superfamily Truncatelloidea
Assimineidae
Family of gastropods
snails, is a taxonomic family of very small freshwater snails with an operculum, aquatic gastropod mollusks. The family Valvatidae has no subfamilies
Valvatidae
Paired artery that supplies blood to the cerebrum
the insula and exit to the cortex via the medial surface of the frontal operculum. The arteries fan superiorly over the pars triangularis and vascularize
Middle_cerebral_artery
Gas-filled organ that contributes to the ability of a fish to control its buoyancy
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Swim_bladder
Species of gastropod
turban, is a large species of marine gastropod with a thick calcareous operculum in the family Turbinidae, the turban snails. The shells of these large
Turbo_marmoratus
Species of fish
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
European_conger
Young fish
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Juvenile_fish
Culinary ingredient
upper jaw, the operculum or gill cover (absent in sharks and jawless fish), and the cheek, which extends from eye to preopercle. The operculum and preopercle
Fish_head
Family of fishes
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Snailfish
Species of gastropod
Pomacea lineata is a species of a freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails
Pomacea_lineata
Species of gastropod
snail, is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Ampullariidae. These snails
Pomacea_bridgesii
Species of gastropod
Pila ampullacea, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails. This
Pila_ampullacea
Species of fish
There are spines on the supracleithrum and there are 2 spines on the operculum, the lower one being normally directed downwards and slightly towards
Sebastes_norvegicus
Species of fish
named for the fish. The genus name Pomoxis refers to crappies' sharp operculum, while the species name annularis means 'having rings', i.e., it has vaguely
White_crappie
Genus of gastropods
(common name: nerite snails), is a genus of small aquatic snails with an operculum in the family Neritidae, the nerites. They are as well marine, brackish
Neritina
List of common names used to refer to fish
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
List_of_fish_by_common_name
Family of gastropods
freshwater snails that includes the mystery snail species. They present an operculum and simultaneously have a gill and a lung as respiratory structures, which
Apple_snail
Common name for several species of snail
open left side. Like all air-breathing water snails, the animal has no operculum, and has only one pair of tentacles with the eye spots at the base of
Ramshorn_snail
Green gem-quality mineral
gemstones Abalone Amber Ammolite Copal Coral Black Precious Ivory Jet Nacre Operculum Pearl Tortoiseshell Other natural objects Bezoar Bog-wood Ebonite (vulcanite)
Peridot
Family of gastropods
Melongenidae A live Melongena corona in the process of rolling over using its operculum Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Gastropoda
Melongenidae
Genus of gastropods
Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod mollusks in the family Vitrinellidae. According to the World
Circulus_(gastropod)
Genus of fishes
Lepomis derives from the Greek λεπίς ("scale") and πῶμα ("cover", "plug", "operculum"). The genus' most recognizable species is perhaps the bluegill. Some
Lepomis
Genus of carnivorous plants
the center of the crown. The trap is a vertical tube with a 'hood' (the operculum) extending over its entrance; and below it the top of the tube usually
Sarracenia
Species of eucalyptus
20 in) long and 2–3 mm (0.079–0.118 in) wide with a rounded or conical operculum that is shorter and narrower than the floral cup at the join. Flowering
Eucalyptus_radiata
Inner-ear structure in vertebrates which detects acceleration
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Otolith
Infraorder of arthropods
("double") and operculum, refers to the distinguishing feature that unites the superfamilies included in the group, that the genital operculum is made up
Diploperculata
Species of gastropod
is a European species of small brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species
Ecrobia_ventrosa
Mollusc shell
(1998). Constructional morphology, origin, and evolution of the gastropod operculum. Paleobiology, 24, 109–132. McNair, C. G., Kier, W. M., LaCroix, P. D
Lip_(gastropod)
Egg masses of fish and seafood
Jaw hyomandibula pharyngeal jaw Leydig's organ Mauthner cell Meristics Operculum papillare Papilla Photophore Root effect Shark cartilage Scales ganoine
Roe
Spore-bearing cell in ascomycete fungi
asci usually have a specially differentiated tip, either a pore or an operculum. In some hymenium forming genera, when one ascus bursts, it can trigger
Ascus
Species of gastropod
species of small freshwater and brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites. This
Theodoxus_fluviatilis
OPERCULUM
OPERCULUM
OPERCULUM
OPERCULUM
Boy/Male
Indian, Sanskrit
Loved by Everyone
Boy/Male
Tamil
Without miseries
Girl/Female
French
Dear one;darling'.
Surname or Lastname
English
English : habitational name from a place in Oxfordshire named Crowell, from Old English crÄwe ‘crow’ + well(a) ‘spring’, ‘stream’.
Boy/Male
American, Anglo, Australian, Christian, French, Jamaican
From Airel
Girl/Female
Hindu
Meteorite
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Handsome; Lord Vishnu
Girl/Female
Tamil
Ananda | ஆநஂதா, ஆநஂதÂ
Joy, Happiness
Surname or Lastname
English
English : nickname from Middle English child ‘child’, ‘infant’ (Old English cild), in various possible applications. The word is found in Old English as a byname, and in Middle English as a widely used affectionate term of address. It was also used as a term of status for a young man of noble birth, although the exact meaning is not clear; in the 13th and 14th centuries it was a technical term used of a young noble awaiting elevation to the knighthood. In other cases it may have been applied as a byname to a youth considerably younger than his brothers or to one who was a minor on the death of his father.English : possibly a topographic name from Old English cielde ‘spring (water)’, a rare word derived from c(e)ald ‘cold’.
Surname or Lastname
English
English : variant spelling of Stegall.
OPERCULUM
OPERCULUM
OPERCULUM
OPERCULUM
OPERCULUM
n.
Any one of numerous marine gastropods of the genus Turbo or family Turbinidae, usually having a turbinate shell, pearly on the inside, and a calcareous operculum.
n.
The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda.
n.
Any lid-shaped structure closing the aperture of a tube or shell.
n.
The fold of integument, usually supported by bony plates, which protects the gills of most fishes and some amphibians; the gill cover; the gill lid.
a.
Destitute of an operculum, or cover.
n.
Any spiral marine gastropod belonging to Turritella and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum.
pl.
of Operculum
n.
Any lidlike or operculiform process or part; as, the opercula of a dental follicle.
n.
A small beaklike process or extension of some part; a small rostrum; as, the rostellum of the stigma of violets, or of the operculum of many mosses; the rostellum on the head of a tapeworm.
n.
The principal opercular bone in the upper and posterior part of the gill cover.
a.
Bearing an operculum.
a.
Producing an operculum; -- said of the foot, or part of the foot, of certain mollusks.
n.
One of the two lower valves of the operculum of a barnacle.
n.
One of the dorsal plates of the operculum of a cirriped.
a.
Situated below the operculum; pertaining to the suboperculum.
pl.
of Operculum
n.
Any one of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae. They secrete a calcareous tube, which is usually irregularly contorted, but is sometimes spirally coiled. The worm has a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts.
n.
The lid of a pitcherform leaf.
n.
A genus of small spiral fresh-water gastropods having an operculum.
n.
The lid of the urnlike capsule of mosses.