Слова на букву auxo-capi (732) Dictionary of invertebrate zoology
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Слова на букву auxo-capi (732)

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auxotroph
n. [Gr. auxein, to increase; trophe, nourishment] Nutritionally dependent cells, individuals or strains whose growth depends on a specific nutrient in addition to their basic ...
avesiculate
adj. [Gr. a, without; L. vesicula, small bladder] (ANNELIDA) a. Referring to a genital system without seminal vesicles. b. Refers to a nephridium without a bladder.
avicular
adj. [L. dim. avis, bird] Beak-like.
avicularium
n.; pl. -ria [L. dim. avis, bird] (BRYOZOA) An enlarged pedunculate operculum of polymorphs, resembling a bird\'s beak and more intricately reinforced than those of ordinary ...
aviculoid
adj. [L. dim. avis, bird; Gr. eidos, form] Having winglike projections.
axenic
adj. [Gr. a, without; xenos, guest] Without, or free from associated organisms; aseptic; see xenic, dixenic, monoxenic, polyxenic, trixenic.
axial
adj. [L. axis, axle] Of or pertaining to an axis; relative to the central axis of a cylindrical body or organ.
axial cells
(MESOZOA: Rhombozoa) Central cells, comprised of a nucleus and germinal cells (axoblasts).
axial construction
(PORIFERA) A type of skeletal organization with certain components condensed to form a dense central region or axis.
axial filament
1. (ARTHROPODA: Insecta) see axoneme. 2. (PORIFERA) A protein core around which siliceous spicules are organized.
axial gland
(ECHINODERMATA) A dark elongated mass of spongy tissue extending along the length of the stone canal, forming part of the hemal system; sometimes called axial organ or ...
axial gradient
Gradation in metabolic rate along the three main body axes, anterior-posterior, dorsoventral and median- lateral.
axial organ
see axial gland.
axial spear
see stomatostyle, odontostyle.
axial stylet
См. axial spear.
axil
n. [L. axilla, armpit] (ECHINODERMATA: Asteroidea) The angle formed by junction of rays or straight-sided arms with no interbrachial arcs.
axil-arm
(ECHINODERMATA: Crinoidea) A main-axil arm and its branches, exclusive of terminal branchlets (omega-ramule).
axilla
n.; pl. axillae [L. axilla, armpit] (ARTHROPODA: Insecta) In Hymenoptera, a triangular or rounded sclerite on each side of the scutellum.
axillaries
see pteralia.
axillaris
n. [L. axillaris, of an axil] (ARTHROPODA: Insecta) The second and third anal wing veins.
axillary
adj.; pl. -ies [L. axilla, armpit] 1. (ARTHROPODA: Insecta) Pertaining to the axilla. 2. (ECHINODERMATA: Asteroidea) In an axil, applied to a single ossicle. 3. ...
axillary cell
(ARTHROPODA: Insecta) A cell in the anal area of a wing.
axillary cord
(ARTHROPODA: Insecta) The posterior edge of the articular membrane of a wing base.
axillary excision
(ARTHROPODA: Insecta) In Hymenoptera, a notch in the hind wing that is at the distal end of the second anal furrow between the 2nd and 3rd anal veins.
axillary furrow
see plica jugalis.
axillary incision
(ARTHROPODA: Insecta) In Diptera, an incision on the inner margin of a wing, distinguishing the alula from the main part.
axillary lobe
(ARTHROPODA: Insecta) One of the sclerites covering the base of a wing.
axillary membrane
(ARTHROPODA: Insecta) The membrane of the wing base extending from the tegula at the base of the costal margin to the axillary cord at the base of the anal area.
axillary plate
(ARTHROPODA: Insecta) In Odonata, a large plate hinged to the tergum, supported by an arm from the pleural wing process.
axillary region
(ARTHROPODA: Insecta) That area of a wing base that contains the axillary sclerites.
axillary sclerites
(ARTHROPODA: Insecta) Small plates between the notum and base of the wing, functioning in wing-flexing; sometimes called ossicles or pteralia.
axillary vein
(ARTHROPODA: Insecta) A vein in the anal area of the hind wing.
axis
n.; pl. axes [L. axis, axle] A line of reference around, along or across where symmetry is established or gradients measured.
axoblast
n. [Gr. axon, axle; blastos, bud] (MESOZOA: Rhombozoa) Germinal cells of dicyemids that undergo cleavage and produce new individuals.
axocoel
n. [Gr. axon, axle; koilos, hollow] (ECHINODERMATA) The first pair of coelomic sacs in an embryo, that open to the surface by the hydropore.
axon
См. axone.
axone
n. [Gr. axon, axle] A long-unbranched or sparsely branched, nerve fiber, which usually conveys impulses away from the cell-body of its neuron.
axoneme
n. [Gr. axon, axle; nema, thread] The core of a cilium or flagellum, comprising microtubles; genoneme of a chromosome.
axoplasm
n. [Gr. axon, axle; plasma, formed or molded] The cytoplasm or neuroplasm of an axis cylinder.
azoic era
A geologic era embracing the first four or five billion years of earth history, antedating any record of organized life forms.
azonic
adj. [Gr. a, without; zone, belt] Not restricted to a zone or locality.
azurophil
adj. [F. azur, blue; Gr. philein, to love] Having an affinity for staining with azure-eosin combinations; see eosinophil.
azygobranchiate
adj. [Gr. a, without; zygon, yoke; branchia, gills] Pertaining to gills or ctenidia variously reduced on one side.
azygous
n. [Gr. a, without; zygon, yoke] An unpaired appendage, structure or process; azygous, azygote adj..
B-chromosome
См. extra chromosomes.
baccate
adj. [L. bacca, berry] Berry-like in appearance; bacciform.
bacillary
adj. [L. bacillum, little stick] Rod-shaped, or consisting of rod-shaped structures.
bacillary band
(NEMATA) A modification of the hypodermis, consisting of glandular and nonglandular cells.
bacillary layer
see brush border.
bacilliform
adj. [L. bacillum, little stick; forma, shape] 1. Rodshaped. 2. (ARTHROPODA: Insecta) In certain male Diptera, refers to a pair of sclerites in the postabdomen joining the ...
back
n. [A.S. baec, the rear or dorsal part] The dorsal or upper surface.
bacteremia
n. [Gr. bakterion, small rod; haima, blood] The presence of bacteria in the hemolymph or blood of invertebrates, without production of harmful toxins or other deleterious ...
bacteriophagous
adj. [Gr. bakterion, small rod; phagein, to eat] Feeding on bacteria.
baculiform
adj. [L. baculum, stick or rod; forma, shape] Appearing rod- or staff-like.
baculite
n. [L. baculum, stick or rod] (MOLLUSCA: Cephalopoda) A straight shelled ammonite, extinct at the end of the Cretaceous Period.
baenomere
n. [Gr. bainein, to walk; meros, part] (ARTHROPODA: Insecta) The leg-bearing thoracic segment.
baenopoda
n. [Gr. bainein, to walk; pous, foot] (ARTHROPODA: Insecta) The thoracic legs.
baenosome
n. [Gr. bainein, to walk; soma, body] (ARTHROPODA: Insecta) The thorax.
Baer's disc
(PLATYHELMINTHES: Trematoda) In Aspidogastrea, the large, ventral sucker; see opisthaptor.
bailer
n. [F. baille, a bucket] (ARTHROPODA: Crustacea) An exopod of the maxilla of crayfish and lobsters that functions in regulating the flow of water in the gill chamber; ...
balanced lethals
Heterozygotes in which a gene mutation or chromosome structural change occurs that blocks normal development and is fatal before sexual maturity; see lethal factor.
balanced load
A term describing a decrease in the overall fitness of a population due to the component genes that are maintained in the population because they add to fitness in different ...
balanced polymorphism
A polymorphism maintained in the same breeding population by a selective superiority of the heterozygotes over either type of homozygotes; see transient polymorphism.
balancers
n. pl. [L. bis, two; lanx, plate, pan of a balance] (ARTHROPODA: Insecta) The halteres of Diptera.
balanoid
adj. [Gr. balanos, acorn; eidos, like] Acorn shaped.
balantin
См. balantine.
balantine
n. [Gr. balantidion, little bag] (ANNELIDA: Oligochaeta) Male and prostatic pores in segment xix.
Balbiani body
См. Balbiani nucleus.
Balbiani nucleus
The yolk nucleus.
Balbiani ring
(ARTHROPODA: Insecta) In chironomid Diptera, a large RNA puff on chromosome IV of the salivary glands during larval development.
bald
adj. [ME. balled, equivalent to ball, white spot] Lacking specific hair or other surface covering.
Baldwin effect
The condition in which an organism can stay in a favorable environment, with modification of the phenotype by mutation and selection, until genetic assimilation has been ...
ballonets
n. pl. [OHG. balla, a spherical body] (NEMATODA: Secernentea) Four inflated areas in the cephalic region, immediately posterior to the lips, that form a collarette in ...
ballooning
n. [OHG. balla, a spherical body] (ARTHROPODA: Chelicerata) Flying through the air on silken lines spun by spiders.
band
n. [A.S. bindan, band] 1. A transverse marking broader than a line. 2. (ARTHROPODA: Insecta) a. In Diptera, the chromosome pairing of like chromomeres that produce the ...
barb
n. [L. barba, beard] 1. Any spine or hair-like bristle with a process projecting obliquely or crosswise from the surface. 2. A spine with teeth pointing backward.
barbate
См. barbatus.
barbatus
adj. [L. barba, beard] Tufts or fascicles of hair or short bristles; bearded; having tufts of hair.
barbula
n.; pl. -lae [L. dim. barba, beard] (ARTHROPODA: Insecta) In Coleoptera, a tuft of hairs or short bristles at the sides of the abdomen near the anal region of scarabaeoid ...
bark
n. [Sw. bark, rind] (PORIFERA) The outer casing of spongin of those having discontinuous fiber structure.
baroceptor
См. baroreceptor.
baroreceptor
n. [Gr. baros, weight; L. capere, to take] An organ perceiving changes in pressure.
barotropism
n. [Gr. baros, weight; tropein, to turn] A response to pressure stimuli.
barrier
n. [OF. barre, bar] An obstacle or obstruction that limits the spread or distribution of animals.
barrier reef
see coral reef.
basad
adv. [L. basis, base; ad, to] Toward the base.
basal
adj. [L. basis, base] Pertaining to the base; near the point of attachment of a structure or appendage.
basal bud
(BRYOZOA: Gymnolaemata) The bud arising from the basal wall of the parent zooid; see distal bud.
basal canal
(BRYOZOA) The circumoral lacuna of the lophophore into which the internal lacunae of all the tentacles open.
basal diaphragm
(BRYOZOA: Stenolaemata) The diaphragm acting as the floor of the living chamber.
basal disc
(BRYOZOA: Stenolaemata) The encrusting proximalmost part of an ancestrula.
basal knobs
(NEMATA) The posterior knobs of the oral stylet; see stylet knobs.
basal lamina
(PORIFERA) The attachment surface.
basal margin
(ARTHROPODA: Crustacea) In Cirripedia, the lower edge of the scutum, tergum or other plates.
basal pigment cell
(ARTHROPODA: Insecta) When present, a second sleeve of pigment cells that surrounds the proximal end of the retinulae; see corneal pigment cells, accessory pigment cells. ...
basal plates
1. (ECHINODERMATA: Crinoidea) A cycle of 5 aboral calyx plates in primitive stalked crinoids; see radial plates. 2. (NEMATA) The circular base of the cephalic ...
basal platform
(BRYOZOA: Gymnolaemata) In Cheilostomata, the multizooidal skeletal layers of the basal zooidal walls; basal plate.
basal ring
(NEMATA) The annular structure that extends posteriorly from the outer margin of the basal plate of the cephalic framework.
basal sclerites
(ARTHROPODA: Insecta) In Diptera, two lateral, vertical lamellae uniting ventrally to form a trough that lodges the pharynx.
basal suture
(ARTHROPODA: Insecta) In Isoptera, the line along which the wing separates from the body and shedding takes place.
basal window
(BRYOZOA: Gymnolaemata) In Cheilostomata, the subcentral, uncalcified section of an encrusting colony\'s exterior basal zooidal wall.
basal zooidal wall
(BRYOZOA) In Stenolaemata and Gymnolaemata, the interior or exterior zooidal supporting wall, normally parallel to the orificial wall.
basalar
adj. [L. basis, base; ala, wing] (ARTHROPODA: Insecta) Pertaining to the sclerites below the wing base.
basalia
adj. [L. basis, base] (PORIFERA) Pertaining to spicules protruding from the lower surface of a sponge.
basalis
n. [L. basis, base] (ARTHROPODA: Insecta) The main mandibular sclerite to which all other parts are joined.
base
n.; pl. bases [L. basis, base] 1. The bottom of anything. 2. The main ingredient in anything that is a fundamental element or constituent. 3. The portion of a body to which ...
basement membrane
1. The noncellular membrane underlying the epidermal cells of the body wall that separates it from the body cavity. 2. (ARTHROPODA: Insecta) Applied also to the inner ...
basicarnal angle
(ARTHROPODA: Crustacea) In Cirripedia, the intersection of the basal and median dorsal margins of the dorsal plate (tergum).
basicerite
n. [Gr. basis, base; keras, horn] (ARTHROPODA: Crustacea) In Decapoda, the second segment of the antennal stalk of shrimp (Caridea) that bear flattened exopods.
basiconic peg
(ARTHROPODA: Insecta) Sensory organs in the form of short hairs or pegs projecting above the general surface.
basicosta
n. [L. basis, base; costa, rib] (ARTHROPODA: Insecta) The basal part of the coxa, as indicated by the basicostal suture.
basicostal suture
(ARTHROPODA: Insecta) A strengthening ridge that indicates the external basal part of the coxa, the basicosta.
basicoxite
n. [L. basis, base; coxa, hip] (ARTHROPODA: Insecta) The narrow basal rim of the coxa.
basifemoral ring
(ARTHROPODA: Chelicerata) In Acari, the suture in the basal segment of the femur, that separates the basiand telofemur of the leg.
basifemur
n. [L. basis, base; femur, thigh] (ARTHROPODA: Chelicerata) In Acari, a segmental division of the femur, separated from the telofemur by the basifemoral ring.
basilaire
see jugum.
basilar
adj. [L. basis, base] Related to or situated at the base.
basilateral angle
see basitergal angle.
basilemma
see basement membrane.
basimandibula
n. [L. basis, base; mandibulum, lower jaw] (ARTHROPODA: Insecta) In Orthoptera, a narrow sclerite between the mandible and gena; a trochantin.
basimaxilla
n. [L. basis, base; maxilla, upper jaw] (ARTHROPODA: Insecta) The basal maxillary sclerite.
basimetrical
n. [Gr. basis, base; metrikos, of measuring] The vertical or horizontal distribution of organisms at the seabottom.
basinym
n. [Gr. basis, base; onyma, name] The name upon which new names of species or higher classifications has been based; see isonym.
basioccludent angle
(ARTHROPODA: Crustacea) In Cirripedia, the intersection of basal and occludent margins of the scutum.
basiophthalmite
n. [Gr. basis, base; ophthalmos, eye] (ARTHROPODA: Crustacea) The proximal segment of the eyestalk, that articulates with the distal segment (podophthalmite) bearing the ...
basiperiphallus
n.; pl. -li [Gr. basis, base; peri, around; phallos, penis] (ARTHROPODA: Insecta) In Protura, the basal ring of the periphallus, into which the acroperiphallus is sometimes ...
basipharynx
n. [Gr. basis, base; pharynx, gullet] (ARTHROPODA: Insecta) The epipharynx and hypopharynx combined.
basipod(ite)
n. [Gr. basis, base; pous, foot] 1. (ARTHROPODA: Insecta) The second segment of a telopodite; the first trochanter. 2. (ARTHROPODA: Crustacea) see basis.
basiproboscis
n. [Gr. basis, base; proboskis, trunk] (ARTHROPODA: Insecta) In Diptera, the basal portion of the proboscis; the rostrum.
basipulvilli
n. pl. [L. basis, base; pulvillus, small cushion] (ARTHROPODA: Insecta) In Diptera, the small lateral sclerite at the base of the pulvillus.
basirostral
adj. [L. basis, base; rostrum, bill] At the rostrum base.
basis
n; pl. bases [L. basis, base] 1. A general term for the base of any appendage. 2. (ARTHROPODA: Crustacea) a. A protopod segment adjoining the coxa and carrying the exopod ...
basiscopic
adj. [Gr. basis, base; skopein, to view] Looking toward the base; see acroscopic.
basiscutal angle
(ARTHROPODA: Crustacea) Intersection of basal and scutal margins of the tergum in thoracic barnacles.
basisternum
n. [L. basis, base; sternum, breastbone] (ARTHROPODA: Insecta) That part of a thoracic sternum anterior to the sternacostal suture and/or the sternal apophyses; ...
basistylus
n. [Gr. basis, base; stylos, pillar] (ARTHROPODA: Insecta) 1. In Diptera, the basal segment of the gonopods. 2. In Protura, the basal part of the stylus; see ...
basitarsal ring
(ARTHROPODA: Chelicerata) A suture separating the basitarsus and telotarsus of the legs; mesotarsal ring.
basitarsal scissure
(ARTHROPODA: Chelicerata) A scissure separating the basitarsus and telotarsus of the leg.
basitarsus
n.; pl. -si [Gr. basis, base; tarsos, flat of the foot] (ARTHROPODA) 1. The proximal division of a tarsus; the metatarsus. 2. In Chelicerata, separated from the ...
basitergal angle
(ARTHROPODA: Crustacea) Intersection of the basal and tergal margins of the scutum of thoracic barnacles.
basitibial plate
(ARTHROPODA: Insecta) In Apoidea, a small plate or scalelike projection at the base of the hind tibia.
basitrich
(CNIDARIA) Isorhizal nematocyst with spines at the base of the tube only.
basitrichous isorhiza
См. basitrich.
basivalvula
n.; pl. -lae [L. basis, base; dim. valva, fold] (ARTHROPODA: Insecta) A small sclerite at the base of the first valvulae of the genitalia.
basopinacocytes
n. pl. [Gr. basis, base; pinax, tablet; kytos, container] (PORIFERA) Cells that form the basal epithelium; in Corvomeyenia , a fresh-water sponge, they actively ingest ...
batatiform
adj. [L. batata, sweet potato; forma, shape] Resembling the shape of a sweet potato.
Batesian mimicry
A form of deceptive mimicry in which a palatable species assumes the appearance of a species distasteful or poisonous to a predator; false warning color; allosematic color; ...
bathmis
see pterostigma.
bathyal
adj. [Gr. bathys, deep] That zone over the continental slope to a depth of perhaps 2000 meters.
bathylimnetic
adj. [Gr. bathys, deep; limne, marsh] Pertaining to or inhabiting the depths of fresh water lakes or marshes.
bathymetric
adj. [Gr. bathys, deep; metron, measure] 1. Pertaining to the science of measuring depths of oceans, seas or other large bodies of water. 2. Pertaining to the vertical or ...
bathymetric zone
One of the horizontal divisions of an ocean; one of the contour zones of the ocean or sea.
bathypelagic
adj. [Gr. bathys, deep; pelagos, sea] Living on or near the bottom in the depths of the ocean; see epipelagic, mesopelagic.
battery
n.; pl. -ies [F. battre, to beat] (CNIDARIA: Hydrozoa) A group of nematocysts on the tentacles of hydras and some other hydroid polyps.
batumen
n. [uncertain origin] (ARTHROPODA: Insecta) A layer of propolis, or hard cerumen plus various other materials that enclose the nest cavity of a colony of stingless bees. ...
batumen plates
(ARTHROPODA: Insecta) Batumen walls partitioning portions of a larger cavity from that utilized as a nest cavity by stingless bees.
bave
n. [F. bave, drivel] (ARTHROPODA: Insecta) The double thread of fluid silk spun by caterpillars.
bdelloid
adj. [Gr. bdella, leech; eidos, form] Being leech-like in appearance.
bead
n. [A.S. gebed, prayer] (MOLLUSCA: Bivalvia) A rounded rib protuberance.
beaded
see moniliform.
beak
n. [OF. bec, beak] 1. Anything projecting and ending in a point. 2. (ARTHROPODA) a. In Chelicerata, the gnathosome of acarines. b. In Crustacea, the anteroventral projection ...
beaked apex
(ARTHROPODA: Crustacea) In Balanomorpha, the upper angle of the tergum formed into a long narrow point.
bean shaped
see reniform.
beard
n. [L. barba, beard] 1. Any tuft of filaments on any part of an organism. 2. (ARTHROPODA: Insecta) For Diptera, see mystax. 3. (MOLLUSCA) see byssus; bearded adj..
bedegar
n. [F. bedeguar, Per. bad-awar, windbrought] (ARTHROPODA: Insecta) A cynipid gall of Rhodites rosae; a pin-cushion gall.
bedeguar
См. bedegar.
bee dance
(ARTHROPODA: Insecta) A series of movements performed by honeybees upon returning to the hive, that informs other bees of the location of the food source.
bee lice
(ARTHROPODA: Insecta) Small, flattened, apterous dipteran flies that are commensal with honeybees, often epizoic on the workers or queens.
bee milk
see worker jelly.
beebread
n. (ARTHROPODA: Insecta) A bitter pollen stored by bees in the honeycomb that when mixed with honey is used for food by larvae and newly-emerged workers; cerago; see ...
bees
n. pl. [A.S. beo, bee] (ARTHROPODA: Insecta) The flower-visiting, social or solitary, aculeate hymenopterous insects belonging to the superfamily Apoidea.
beeswax
n. [A.S. beo, bee; weax, wax] (ARTHROPODA: Insecta) A wax secreted by glands on the ventral surface of the abdomen of worker bees that is used in the construction of ...
belemnoid
adj. [Gr. belemnon, javelin; eidos, form] Dartlike in shape.
bell
n. [A.S. belle, bell] 1. Any bell-shaped structure. 2. (CNIDARIA) a. In Hydrozoa, the umbrella of jellyfish. b. In Scyphozoa, the nectophores of siphonophores. 3. ...
bell shaped
see campanulate.
Bellonci organ
see organ of Bellonci.
belonoid
adj. [Gr. belone, needle; eidos, form] Needle-like in shape.
benthic
adj. [Gr. benthos, depths of sea] Pertaining to the seabottom; maybe extended to include some of the benthic animals: crabs, snails, starfish, certain worms, clams, sponges, ...
benthopotamous
adj. [Gr. benthos, depths; potamos, river] Pertaining to organisms or plants living on the bottom of a river or stream.
Bergmann's rule
The principal that the average body size is geographically variable in that the animals are larger in the cooler climates of the range of a species.
Berlese's organ
see Ribaga\'s organ.
berry
n. [A.S. berie, berry] (ARTHROPODA: Crustacea) An egg of certain Decapoda.
besomiform
adj. [A.S. besma, broom; L. forma, shape] Broom shaped.
beta
n. [Gr. beta] The second letter of the Greek alphabet ( ) used to designate the second in a series, as -chlorophyll and -chlorophyll.
beta taxonomy
A level of taxonomy involving the arrangment of species into a natural system of lower and higher taxa; see alpha taxonomy, gamma taxonomy.
beta-chlorophyll
(ARTHROPODA: Insecta) The chlorophyll that produces color.
beta-female
see teratogyne.
bialate
adj. [L. bis, two; alatus, winged] Two-winged.
biangular
adj. [L. bis, two; angulus, corner, bend] Having two angles or double keeled.
biarcuate
adj. [L. bis, two; arcuatus, bent like a bow] Twice curved.
biareolate
adj. [L. bis, two; areolatus, small places] Two celled, or having two areolae; see bilocular.
biarticulate
adj. [L. bis, two; dim. artus, joint] Having two joints; diarticular.
biaxial
adj. [L. bis, two; axis, axle] Having two axes.
bicanaliculate
adj. [L. bis, two; canalis, a channel] Having two channels or grooves.
bicarinate
adj. [L. bis, two; carina, keel] Having two carinae or keel-like projections.
bicaudal
См. bicaudate.
bicaudate
adj. [L. bis, two; cauda, tail] Possessing two tails or anal processes.
bicellular
adj. [L. bis, two; cellula, little cell] Composed of two cells.
biciliate
adj. [L. bis, two; cilium, eyelash] Furnished with two cilia, flagella, or elaters.
biconcave
adj. [L. bis, two; concavus, hollow or arched inward] Being concave on both sides; amphicoelous; see amphicyrtic.
bicondylic
see dicondylic.
biconic
adj. [L. bis, two; Gr. konos, cone] Being formed as two cones placed base to base.
biconvex
adj. [L. bis, two; convexus, arched outward] Being convex on opposite sides; lens-shaped; see amphicyrtic, amphicoelous.
bicorn
adj. [L. bis, two; cornu, horn] Bearing two horns; crescentlike.
bicornuate
adj. [L. bis, two; cornutus, horned] Having two horns or cephalic processes.
bicornuate uterus
A uterus in which both uteri are fused, but have short lateral extensions.
bicron
see nanometer.
bicuspidate
adj. [L. bis, two; cuspidatus, pointed] Being double pointed; having two cusps or points.
bidactyl
n. [L. bis, two; Gr. daktylos, finger] (ARTHROPODA) An appendage, ambulacrum, apotele, or claw with two lateral ungues; see monodactyl, tridactyl.
bideficiency
n. [L. bis, two; deficare, to be wanting] A form of phanerotaxy, exhibited by the absence of two of the elements typically present in a particular organism; see holotaxy.
bidentate
adj. [L. bis, two; dens, tooth] Having two teeth.
bidenticulate
adj. [L. bis, two; dim. dens, tooth] Having two small teeth or tooth-like processes.
bidesmatic
adj. [L. bis, two; Gr. desmos, bond] Pertaining to two tendons attached at the base of the distal segment of an appendage; a eudesmatic articulation.
bidiscoidal
adj. [L. bis, two; Gr. diskos, circular plate; eidos, form] Having two disc-shaped parts.
bidiverticulate
adj. [L. bis, two; devertere, to turn away] Having two diverticula.
biemarginate
adj. [L. bis, two; emarginatus, notched at the apex] Having two notches on the border or edge.
biennial
adj. [L. bis, two; annus, year] Occurring once every two years.
bifacial
adj. [L. bis, two; facies, face] Having opposite surfaces alike.
bifarious
adj. [L. bis, two; fariam, in rows] Being arranged in 2 rows, on either side of an axis; being oriented or pointed in opposite directions.
bifasciate
adj. [L. bis, two; fascia, band] With two broad well defined bands or fascia.
bifenestrate
adj. [L. bis, two; fenestra, window] (NEMATODA: Secernentea) A term used to describe heteroderid fenestra divided by a broad vulval bridge so that it appears to be two ...
bifid
adj. [L. bis, two; findere, to split] Divided into two branches, arms, or prongs, or into two equal parts by a cleft; separated down the middle by a slit; divided by a ...
bifilar
adj. [L. bis, two; filum, thread] Having two filaments, threads, or fibers.
biflabellate
adj. [L. bis, two; flabellum, fan] (ARTHROPODA) Twice fabellate; a form of antenna with each side of the joints having long flattened processes.
biflagellate
adj. [L. bis, two; flagellum, whip] Having two flagella; dikont.
biflex
adj. [L. bis, two; flectere, to bend] Bending in two directions.
bifoliate colony
(BRYOZOA: Stenolaemata) An erect colony formed by two layers of zooids budding back to back from the interior multizooidal median wall.
bifollicular
adj. [L. bis, two; folliculus, small sac] Having two follicles.
biforate
adj. [L. bis, two; forare, to bore] Having two perforations.
biform
adj. [L. bis, two; forma, form] Having two forms, or combining characteristics of two forms.
biformes
n. [L. bis, two; forma, form] (ARTHROPODA: Crustacea) A carapace that reflects sexual dimorphism in differing valve proportions for each sex of the same species.
biforous spiracle
(ARTHROPODA: Insecta) An immature\'s spiracle having two entrances (air tubes); annular-biforous spiracles.
bifurcate
adj. [L. bis, two; furca, fork] Divided into two branches, stems or knobs; two pronged.
bigeminal
adj. [L. bis, two; geminus, twin] Doubled; paired.
bigener
n. [L. bis, two; genus, kind] A bigeneric hybrid.
bigeneric
adj. [L. bis, two; genus, kind] Pertaining to hybrids between species of different genera.
bigiceriate
См. bigigeriate.
bigigeriate
adj. [L. bis, two; gigerium, entrail] Having two gizzards.
biguttate
adj. [L. bis, two; gutta, drop, spot] Having two droplike spots.
bijugate
adj. [L. bis, two; jugum, yolk] Being yoked two together; two-paired.
bilabiate spiracle
(ARTHROPODA: Insecta) An elongate or annular spiracle of certain larvae with a pair of projecting lips interior to the peritreme; one having two lips at the slit-like ...
bilamellar
adj. [L. bis, two; lamella, plate] Having two lamellae or plates; two-lipped.
bilaminar
adj. [L. bis, two; lamina, thin plate] Consisting of two lamina or thin plates; diploblastic.
bilaminate colony
(BRYOZOA: Gymnolaemata) A cheilostomate colony with erect branches comprised of two layers of zooids, each with separate, but common exterior basal walls.
Bilatera
A former division of the animal kingdom containing all those forms that show bilateral symmetry.
bilateral
adj. [L. bis, two; latus, side] Having two equal or symmetrical sides.
bilateral cleavage
That in which the blastomeres exhibit marked bilateral symmetry.
bilateral symmetry
Symmetry such that a body or part can be divided through the longitudinal axis by one mediosagittal plane into equivalent right and left halves, each for all practical ...
Bilateralia
См. Bilatera.
biliary vessels
see Malpighian tubules.
bilineate
adj. [L. bis, two; lineatus, of a line] Of or pertaining to two lines; marked with two lines.
bilobate
См. bilobed.
bilobed
adj. [L. bis, two; lobus, rounded projection] Having two lobes.
bilocular
adj. [L. bis, two; loculus, compartment] Divided into two cells, chambers, compartments or loculi.
bimaculate
adj. [L. bis, two; macula, spot] Marked with two spots or stains.
bimarginate
adj. [L. bis, two; margo, border] Having two margins.
bimineralic skeleton
(BRYOZOA: Gymnolaemata) Zoarium or zooecium composed of layers of calcite and others of aragonite.
bimuscular
adj. [L. bis, two; musculus, muscle] Having two muscles.
binary
adj. [L. binarius, from bini, pair] 1. Composed of two units, elements or parts. 2. Refers to designations of two kinds of names; see binominal nomenclature.
binary fission
A form of asexual reproduction in which a cell, or organism divides into approximately equal parts; see transverse fission.
binary nomenclature
see binominal nomenclature.
binate
adj. [L. bini, pair] Doubled; growing in pairs.
binervate
adj. [L. bis, two; nervus, nerve] Having two nerves or veins.

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