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Genus of gastropods
Physa is a genus of small, left-handed or sinistral, air-breathing freshwater snails, aquatic pulmonate gastropod molluscs in the subfamily Physinae of
Physa
Species of freshwater snail
Physella acuta, also known as the European physa, tadpole snail, sewage snail, bladder snail, or acute bladder snail, is a species of small, air-breathing
Physella_acuta
Species of gastropod
Physa fontinalis, common name the common bladder snail, is a species of air-breathing freshwater snail, an aquatic gastropod mollusc in the family Physidae
Physa_fontinalis
Species of gastropod
The Snake River physa snail, scientific name Physella natricina, is a species of freshwater snail, an aquatic gastropod mollusk in the family Physidae
Snake_River_physa_snail
Species of gastropod
Physa megalochlamys is a species of gastropod belonging to the family Physidae. The species inhabits freshwater environments. NatureServe. "Physa megalochlamys"
Physa_megalochlamys
Species of gastropod
The cave physa (Physella spelunca) is a species of small, air-breathing, freshwater snail, an aquatic pulmonate gastropod mollusk in the family Physidae
Cave_physa
Extinct species of gastropod
Physa mezzalirai is an extinct fossil species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc belonging to the family Physidae
Physa_mezzalirai
Species of freshwater snail
Physa skinneri, common name the glass physa, is a species of freshwater snail, an aquatic gastropod mollusc in the family Physidae. The shell of Physa
Physa_skinneri
Species of gastropod
The Utah physa, scientific name Physella utahensis, is a species of freshwater snail, an aquatic gastropod mollusk in the family Physidae. The common
Utah_physa
Management concept by Laurence J. Peter
(3): 467–472. arXiv:0907.0455. Bibcode:2010PhyA..389..467P. doi:10.1016/j.physa.2009.09.045. S2CID 9077554. "The 2010 Ig Nobel Prize Winners" (PDF). Annals
Peter_principle
Species of gastropod
The Wet rock physa, scientific name Physella zionis, is a species of freshwater snail, an aquatic pulmonate gastropod mollusc in the family Physidae,
Wet_rock_physa
Extinct species of gastropod
Physa aridi is a fossil species of air-breathing freshwater snail, an extinct aquatic pulmonate gastropod mollusc in the family Physidae. This species
Physa_aridi
Family of molluscs
(Oxford Press, 2003, pp. 307–362). A typical example involved rearing Physa gyrina, or Physa heterostropha in controlled pair groups in either water in which
Physidae
Species of gastropod
Vol. 1, pls 1-126 Sowerby, G. B. II. (1873-1874). Monograph of the genus Physa. In: Conchologia iconica, or illustrations of the shells of molluscous animals
Stenophysa_marmorata
Property of a thermodynamic system
410: 17–21. arXiv:1311.2068. Bibcode:2014PhyA..410...17M. doi:10.1016/j.physa.2014.05.014. S2CID 119224112. Ziegler, H. (1983). An Introduction to Thermomechanics
Entropy
Species of gastropod
The Fish Lake physa, scientific name Physella microstriata, was a species of air-breathing freshwater snail, an aquatic gastropod mollusk in the family
Fish_Lake_physa
Species of gastropod
Hygrophila Family: Bulinidae Genus: Bulinus Species: B. globosus Binomial name Bulinus globosus (Morelet, 1866) Synonyms Physa globosus Morelet, 1866
Bulinus_globosus
Species of gastropod
Partulina physa is a species of tropical air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinellidae. This species
Partulina_physa
Species of gastropod
Hygrophila Family: Bulinidae Genus: Bulinus Species: B. canescens Binomial name Bulinus canescens (Morelet, 1868) Synonyms Physa canescens Morelet, 1868
Bulinus_canescens
Genus of gastropods
1935) - Lowdome Physa Physella bottimeri (Clench, 1924) - Comanche Physa Physella boucardi (Crosse & P. Fischer, 1881) - Desert Physa Physella columbiana
Physella
Tool to measure water quality
The larger snail is L. stagnalis with saprobic value 2.0; the smaller one is possibly a Physa fontinalis with a value of 2.4.
Saprobic_system
Species of gastropod
Family: Bulinidae Genus: Bulinus Species: B. nyassanus Binomial name Bulinus nyassanus (E. A. Smith, 1877) Synonyms Physa nyassana E. A. Smith, 1877
Bulinus_nyassanus
Genus of flowering plants
392144 Paleobiology Database: 92029 Paleobiology Database: 97714 PLANTS: PHYSA POWO: urn:lsid:ipni.org:names:329952-2 Tropicos: 40008002 VASCAN: 1543 VicFlora:
Physalis
Species of gastropod
Hygrophila Family: Bulinidae Genus: Bulinus Species: B. natalensis Binomial name Bulinus natalensis (Küster, 1841) Synonyms Physa natalensis Küster, 1841
Bulinus_natalensis
Species of gastropod
Ponsonby, 1903 Physa alluaudi Dautzenberg, 1908 (junior synonym) Physa cornea Morelet, 1889 (junior synonym) Physa craveni Ancey, 1886 Physa cyrtonota Bourguignat
Bulinus_tropicus
Official (usually with judicial or investigative functions) in an Inquisition
Applications. 339 (3–4): 645–652. arXiv:cond-mat/0306031. doi:10.1016/j.physa.2004.03.020. ISSN 0378-4371. Ormerod, Paul; Roach, Andrew P (2004-08-15)
Inquisitor
Species of gastropod
Agardh Westerlund discovered and described this species under the name Physa sibirica in 1877. Starobogatov et al. moved this species to the genus Sibirenauta
Sibirenauta_sibirica
Type of artificial intelligence model
"Tiny language models". Physica A: Statistical Mechanics and Its Applications. 681 131102. arXiv:2507.14871. doi:10.1016/j.physa.2025.131102. v t e v t e
Small_language_model
Lebanese-American author (born 1960)
429: 252–260. arXiv:1405.1791. Bibcode:2015PhyA..429..252T. doi:10.1016/j.physa.2015.02.038. S2CID 23527680. Cirillo, P.; Taleb, N. N. (2016). "On the tail
Nassim_Nicholas_Taleb
Aircraft without any human pilot on board
Applications. 443: 380–384. Bibcode:2016PhyA..443..380G. doi:10.1016/j.physa.2015.09.055. Mohsan, Syed Agha Hassnain; Khan, Muhammad Asghar; Noor, Fazal;
Unmanned_aerial_vehicle
Correlation of a signal with a time-shifted copy of itself, as a function of shift
Applications. 389 (8): 1601–1606. Bibcode:2010PhyA..389.1601H. doi:10.1016/j.physa.2009.12.050. Hassani, Hossein; Yeganegi, Mohammad Reza (2019). "Sum of squared
Autocorrelation
Species of gastropod
Physa apiculata Morelet, 1867 (junior synonym) Physa capillacea Morelet, 1867 (junior synonym) Physa clavulata Morelet, 1867 (junior synonym) Physa gradata
Bulinus_forskalii
Process that cannot be undone or reversed
Applications. 388 (19): 4025–4033. Bibcode:2009PhyA..388.4025L. doi:10.1016/j.physa.2009.06.027. Lucia, U (2008). "Statistical approach of the irreversible
Irreversible_process
Genus of slime moulds
and moist forest soils. The name Physarum comes from the Greek word φυσα (physa), which means "blister" or "bubble", referring to the bubble-like appearance
Physarum
Concept in physics
756–765. arXiv:cond-mat/0402538. Bibcode:2004PhyA..340..756R. doi:10.1016/j.physa.2004.05.064. S2CID 15922916. Gabrielli A, Caldarelli G, Pietronero L (December
Self-organized_criticality
Adage that work expands to fill its available time
3939–3947, arXiv:0804.2202, Bibcode:2009PhyA..388.3939K, doi:10.1016/j.physa.2009.06.012, S2CID 12097887, It is often argued – as now e.g. in the discussion
Parkinson's_Law
Activities associated with group decisions
Applications. 351 (2–4): 593–604. Bibcode:2005PhyA..351..593S. doi:10.1016/j.physa.2004.12.038. Taylor, Steven L. (2012). 30-Second Politics: The 50 most thought-provoking
Politics
Unpredictable phenomenon in complex systems
1004–1027. arXiv:1204.5601. Bibcode:2013PhyA..392.1004A. doi:10.1016/j.physa.2012.10.035. S2CID 15801210. See review of related research in (Smith 2008
Emergence
Number of protons or neutrons that make a nucleus particularly stable
(4): 693–704. arXiv:0806.2300. Bibcode:2010PhyA..389..693H. doi:10.1016/j.physa.2009.11.016. Herrmann, Richard (2010). "Fractional phase transition in medium
Magic_number_(physics)
Generalization of the standard Boltzmann–Gibbs entropy
375. arXiv:physics/0507212. Bibcode:2005PhyA..356..375B. doi:10.1016/j.physa.2005.06.065. S2CID 18823047. Liu, B.; Goree, J. (2008). "Superdiffusion
Tsallis_entropy
Species of gastropod
elsewhere. Amerianna carinata was originally described under the genus Physa, as Physa (Ameria) carinata, in 1861 by Henry Adams. It was first discovered
Amerianna_carinata
Application of physics to the study of economics
models". Physica A. 562 125309. Bibcode:2021PhyA..56225309C. doi:10.1016/j.physa.2020.125309. Zunino, L., Bariviera, A.F., Guercio, M.B., Martinez, L.B.
Econophysics
Scientific study of politics and social science
3193–3217. arXiv:0905.0129. Bibcode:2010PhyA..389.3193G. doi:10.1016/j.physa.2010.03.035. S2CID 276956. Archived from the original on 3 April 2022. Retrieved
Political_science
Genus of flowering plants
flowers in racemes in summer. The generic name comes from two Greek words, physa (a bladder) and stege (a covering), referring to the calyx, which becomes
Physostegia
Annual international song competition
576–598. arXiv:physics/0505071. Bibcode:2006PhyA..360..576F. doi:10.1016/j.physa.2005.06.051. S2CID 119406544. Gatherer, Derek (31 March 2006). "Comparison
Eurovision_Song_Contest
Part of a mollusc shell
regularity as to be eminently characteristic of some species and genera (Physa, Clausilia, etc.). However, in certain genera, it is found that species
Spire_(mollusc)
Heuristic in folk statistics
3193–3217. arXiv:0905.0129. Bibcode:2010PhyA..389.3193G. doi:10.1016/j.physa.2010.03.035. S2CID 276956. Rybnikov, S.R.; Rybnikova, N.A.; Portnov, B.A
Anna_Karenina_principle
Animals that live underground
renouardi Neritilia mimotoi Mimic cavesnail (Phreatodrobia imitata) Cave physa (Physella spelunca) Pisulina maxima Tashan cave snail (Trogloiranica tashanica)
List_of_troglobites
Blockchain computing platform
Applications. 525: 548–556. Bibcode:2019PhyA..525..548S. doi:10.1016/j.physa.2019.03.091. ISSN 0378-4371. Poyser, Obryan (29 June 2018). "Herding behavior
Tron_(blockchain)
Genus of gastropods
Planorbidae Subfamily: Miratestinae Genus: Amerianna Strand, 1928 Type species Physa (Ameria) carinata H. Adams, 1861 Synonyms Ameria H. Adams, 1861; junior
Amerianna
physa Physa jennessi Dall 1919 - obtuse physa Physa megalochlamys Taylor 1988 - cloaked physa Physa natricina Taylor 1988 - Snake River physa Physa sibirica
List of non-marine molluscs of the United States
List_of_non-marine_molluscs_of_the_United_States
Genus of gastropods
1959 Limnaea (Bulinus) O.F. Müller, 1781 Physa (Bulinus) O.F. Müller, 1781 Physa (Isidora) Ehrenberg, 1831 Physa (Pyrgophysa) Crosse, 1879 Physopsis F.
Bulinus
Network whose degree distribution follows a power law
Applications. 379 (1): 317–333. Bibcode:2007PhyA..379..317S. doi:10.1016/j.physa.2006.11.093. hdl:10419/60649. Steyvers, Mark; Joshua B. Tenenbaum (2005)
Scale-free_network
Mating habits of the class Gastropoda
they have intromission and internal sperm exchange. The freshwater snail Physa acuta is a self-fertile organism that can be exposed either to strong sexual
Mating_of_gastropods
Selection of decision-makers by random sample
3944–3954. arXiv:1103.1224. Bibcode:2011PhyA..390.3944P. doi:10.1016/j.physa.2011.06.028. S2CID 2928707. Pluchino, Alessandro; Rapisarda, Andrea; Garofalo
Sortition
370 (1). Elsevier BV: 1–6. Bibcode:2006PhyA..370....1G. doi:10.1016/j.physa.2006.04.029. ISSN 0378-4371. McCauley, Joseph L. (2006). "Response to "Worrying
Statistical_finance
Protected extension to a fish tank that shares the same water supply
prolific snails which are often Malaysian trumpet snails, Ramshorn snails and Physa and prolific shrimp such as cherry shrimp. Some use refugiums to raise microfauna
Refugium_(fishkeeping)
Species of gastropod
like. Subspecies Bulinus truncatus contortus (Michaud, 1829) (synonym: Physa contorta Michaud, 1829 ) Bulinus truncatus rivularis (Philippi, 1836) Bulinus
Bulinus_truncatus
Gastropod mollusks that live in fresh water
Physella acuta. Family Planorbidae, Planorbarius corneus. The freshwater snail Physa acuta is in the subclass Heterobranchia and the family Physidae. P. acuta
Freshwater_snail
Theorized increase of longevity with age
Applications. 486: 797–805. Bibcode:2017PhyA..486..797E. doi:10.1016/j.physa.2017.05.077. S2CID 125349686. Nassim Nicholas Taleb (2012). Antifragile:
Lindy_effect
tantillus) Umbilicate flat-top snail (Neoplanorbis umbilicatus) Fish Lake physa (Physella microstriata) Acorn ramshorn (Planorbella multivolvis) Fish springs
List of recently extinct molluscs
List_of_recently_extinct_molluscs
Genus of gastropods
Gastropoda Superorder: Hygrophila Superfamily: Lymnaeoidea Family: Physidae Genus: Mexinauta D. W. Taylor, 2003 Type species Physa nitens Philippi, 1841
Mexinauta
877–883. arXiv:cond-mat/0512278. Bibcode:2006PhyA..369..877H. doi:10.1016/j.physa.2005.12.035. S2CID 119340950. M. Formentin; A. Lovison; A. Maritan; G. Zanzotto
Human_dynamics
Stream in Florida panhandle
rock fossaria Physella gyrina, tadpole physa Physella hendersoni, bayou physa Physella cubensis, Carib physa Planorbella trivolvis, marsh rams-horn Gyraulus
Holmes_Creek_(Florida)
Statistical method in data analysis
635–644. arXiv:physics/0504014. Bibcode:2007PhyA..379..635B. doi:10.1016/j.physa.2007.01.011. ISSN 0378-4371. S2CID 27093582. Schubert, Erich (2021). HACAM:
Hierarchical_clustering
American malacologist (1932–2006)
& E. H. JOKINEN, 1984 [5 November], A new species of freshwater snail (Physa) from seasonal habitats in Connecticut. Freshwater Invertebrate Biology
Dwight_Willard_Taylor
Species of gastropod
originally described as Physa (Ameria) obesa in 1861 by Henry Adams. However, a previous scientist had already named another species Physa obesa in 1843, and
Amerianna_obesula
Marine animals of the order Actiniaria
sediment and lack a basal disc, having instead a bulbous lower end, the physa, which anchors them in place. The column or trunk is generally more or less
Sea_anemone
Species of gastropod
Species: G. petiti Binomial name Glyptophysa petiti (Crosse, 1872) Synonyms Glyptophysa (Glyptophysa) petiti (Crosse, 1872) Physa petiti (Crosse, 1872)
Glyptophysa_petiti
Species of gastropod
Physella gyrina, common name the "tadpole physa", is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic pulmonate
Physella_gyrina
Branch of psychology
Statistical Mechanics and its Applications. 388 (24): 4999–5004. doi:10.1016/j.physa.2009.08.029. Retrieved 8 March 2026. Lopez, Anthony C.; McDermott, Rose;
Evolutionary_psychology
Species of sea anemone
rapiformis is replaced by a rounded end known as a "physa" which is used for digging. First the physa is pushed into the soft sediment, then the anemone
Paranthus_rapiformis
Its Applications. 420: 98–107. Bibcode:2015PhyA..420...98S. doi:10.1016/j.physa.2014.08.074. Albert, Réka; Jeong, Hawoong; Barabási, Albert-László (2000)
Attack_tolerance
species of Phyllonotus. Physa aequua Sp. nov Valid Garvie Eocene Weches Formation United States ( Texas) A species of Physa. Pithocerithium mediolanionense
2025_in_paleomalacology
Measure of inequality of a statistical distribution
Applications. 389 (1): 117–125. Bibcode:2010PhyA..389..117E. doi:10.1016/j.physa.2009.08.006. Lee, Wen-Chung (28 February 1999). "Probabilistic analysis
Gini_coefficient
Martinique.) Physidae Physa marmorata (Guilding, 1828) – Previous reports of Physa cubensis = Physa acuta from Dominica were probably Physa marmorata. Neritiliidae
List of non-marine molluscs of Dominica
List_of_non-marine_molluscs_of_Dominica
Aphorism due to Percy Bysshe Shelley
Its Applications. 476: 15–37. Bibcode:2017PhyA..476...15B. doi:10.1016/j.physa.2017.01.071. Boghosian, Bruce M.; Devitt-Lee, Adrian; Wang, Hongyan (2016)
The rich get richer and the poor get poorer
The_rich_get_richer_and_the_poor_get_poorer
Quantum algorithm to calculate path integrals in quantum multi-body problems
Its Applications. 581 126231. Bibcode:2021PhyA..58126231C. doi:10.1016/j.physa.2021.126231. Retrieved May 13, 2022. Path Integral Monte Carlo Simulation
Path_integral_Monte_Carlo
Pseudoscience linking character and blood type
Physica A. 373 (1): 533–540. Bibcode:2007PhyA..373..533K. doi:10.1016/j.physa.2006.05.027. Miller, Laura (1977). "People Types: Personality Classification
Blood_type_personality_theory
Iterative method for finding maximum likelihood estimates in statistical models
Applications. 587 (1) 126456. Bibcode:2022PhyA..58726456K. doi:10.1016/j.physa.2021.126456. ISSN 0378-4371. S2CID 244198364. Einicke, G. A.; Malos, J.
Expectation–maximization algorithm
Expectation–maximization_algorithm
Greek geographer, philosopher and historian (64/63 BC–c.24 AD)
from underground whose source has now died out. Three pits are called "Physas" and separated by forty stadia from each other. Above these pits, there
Strabo
the European freshwater pulmonate Physa acuta are not reproductively isolated from American Physa heterostropha or Physa integra". Invertebrate Biology.
List of non-marine molluscs of Germany
List_of_non-marine_molluscs_of_Germany
Species of gastropod
inflated. Young great pond snails can be confused with those of the genus Physa, and rarely, in cases of irregularly grown shells, with Radix peregra—though
Lymnaea_stagnalis
Species of gastropod
1774 Helix stagnorum Gmelin, 1791 sensu Pulteney, 1799 (misapplication) Physa aenigma Westerlund, 1877 (a junior synonym) Turbo glaber da Costa, 1778
Cochlicopa_lubrica
Geological group of Brazil
São José do Rio Preto and Presidente Prudente Formations. †Physa aridi Mezzalira, 1974 †Physa mezzalirai Ghilardi, Carbonaro & Simone, 2011 †Viviparus souzai
Bauru_Group
Machine learning model for vision processing
666 130529. arXiv:2501.12900. Bibcode:2025PhyA..66630529K. doi:10.1016/j.physa.2025.130529. ISSN 0378-4371. Han, Kai; Wang, Yunhe; Chen, Hanting; Chen
Vision_transformer
Financial theory
Physica A. 377 (2): 599–615. Bibcode:2007PhyA..377..599N. doi:10.1016/j.physa.2006.10.073. Keane, Simon M. (1983). Stock Market Efficiency. Philip Allan
Random_walk_hypothesis
Description of constant-temperature solid phase changes
Physica A. 379 (2): 615–620. Bibcode:2007PhyA..379..615A. doi:10.1016/j.physa.2007.02.002. Avrami, M. (1939). "Kinetics of Phase Change. I. General Theory"
Avrami_equation
Mexinauta impluviatus Mexinauta peruvianus Cloaked physa (Physa megalochlamys) Physa taslei Snake River physa snail (Physella natricina) Sibirenauta aenigma
List of data deficient molluscs
List_of_data_deficient_molluscs
Phenomenon of clustered random events
Mechanics and its Applications, Volume 526, 2019, https://doi.org/10.1016/j.physa.2019.04.237. Schmuland, Byron. "Shark attacks and the Poisson approximation"
Poisson_clumping
Physical process of transition between basic states of matter
3193–3217. arXiv:0905.0129. Bibcode:2010PhyA..389.3193G. doi:10.1016/j.physa.2010.03.035. S2CID 276956. Archived from the original on 3 April 2022. Retrieved
Phase_transition
Geologic formation in Patagonia, Argentina
gastropod Naesiotus Cf.N. sp. "Locality 4" Shells A bulimulid gastropod Physa P. sp. "Locality 4" Shells A physidae gastropod Physella Cf.P. sp. "Locality
Chorrillo_Formation
Non-invasive method of monitoring human rest/activity cycles
307–318. arXiv:physics/0308011. Bibcode:2004PhyA..337..307H. doi:10.1016/j.physa.2004.01.042. ISSN 0378-4371. PMC 2749944. PMID 15759365. Hu, Kun; Someren
Actigraphy
Russian-German physicist
450: 700–747. arXiv:1601.02585. Bibcode:2016PhyA..450..700K. doi:10.1016/j.physa.2016.01.034. Kerner, Boris S. (15 January 2017). "Breakdown minimization
Boris_Kerner
Formulae for relative strengths of military forces
Physica A. 586 (1) 126477: 1–9. Bibcode:2022PhyA..58626477M. doi:10.1016/j.physa.2021.126477. ISSN 0378-4371. Clifton, E. (2020). A Brief Review on the Application
Lanchester's_laws
Species of mollusc
abyssinicus Binomial name Bulinus abyssinicus (von Martens, 1866) Synonyms Physa (Physopsis) abyssinica Martens, 1866 Physopsis meneliki Bourguignat, 1885
Bulinus_abyssinicus
Law in seismology describing earthquake frequency and magnitude
A: Stat. Mech. and its Appl. Vol 508, 2018, pp. 305–312. doi:10.1016/j.physa.2018.05.119 Pathikrit Bhattacharya, Bikas K Chakrabarti, Kamal, and Debashis
Gutenberg–Richter_law
Phenomenon in statistics where highest-ranked data points are outliers
Physica A. 387 (1): 270–276. Bibcode:2008PhyA..387..270J. doi:10.1016/j.physa.2007.08.049. Davies, J.A. (2002). "The individual success of musicians,
King_effect
Statistical Mechanics and its Applications. 438: 308–320. doi:10.1016/j.physa.2015.06.040. ISSN 0378-4371. Meyer-König, T., Klüpfel, H., & Schreckenberg
Evacuation_simulation
Algorithm in statistical physics
Statistical Mechanics and Its Applications. 418: 78–87. arXiv:1404.0209. Bibcode:2015PhyA..418...78W. doi:10.1016/j.physa.2014.06.014. S2CID 118589022.
Glauber_dynamics
PHYSA
PHYSA
PHYSA
PHYSA
Girl/Female
Hebrew
Lily. In the apocryphal Book of Tobit Susannah courageously defended herself against wrongful...
Male
Norwegian
Norwegian form of Old Norse Guðfrøðr, GJURD means "God's peace."
Boy/Male
Tamil
Rich
Boy/Male
British, English
Son of Henry
Boy/Male
Tamil
Energy
Boy/Male
British, English, Norse
Follower of Thor
Female
English
Variant spelling of English Linsey, LINSY means "Lincoln's wetlands."
Boy/Male
Indian, Punjabi, Sikh
Respect-full; Blessed from Everyone
Girl/Female
Muslim
Worshipper
Boy/Male
Hindu, Indian, Tamil
Lord Shiva
PHYSA
PHYSA
PHYSA
PHYSA
PHYSA
n.
A genus of fresh-water Pulmonifera, having reversed spiral shells. See Pond snail, under Pond.
n.
A genus of large oceanic Siphonophora which includes the Portuguese man-of-war.
n. pl.
An order of pelagic Hydrozoa including species which form complex free-swimming communities composed of numerous zooids of various kinds, some of which act as floats or as swimming organs, others as feeding or nutritive zooids, and others as reproductive zooids. See Illust. under Physallia, and Porpita.
n.
Any siphonophore which has an air sac for a float, as the Physalia.
n. pl.
The division of Siphonophora which includes the Physalia and allied genera; -- called also Pneumatophorae.
n.
An herbaceous plant of the nightshade family (Physalis alkekengi) and its fruit, which is a well flavored berry, the size of a cherry, loosely inclosed in a enlarged leafy calyx; -- also called winter cherry, ground cherry, and strawberry tomato.
n.
A very large North Atlantic whalebone whale (Physalus antiquorum, or Balaenoptera physalus). It has a dorsal fin, and strong longitudinal folds on the throat and belly. Called also razorback.
n.
A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.
n. pl.
An order of Siphonophora which includes Physalia.