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

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adj. [L. bini, pair; oculus, eye] Having two eyes.
adj. [L. bis, two; nodulus, little knot] Having two nodes, knobs, or swellings of small size.
n. [L. bis, two; nomen, name] The scientific designation of a species, consisting of a generic and a specific name; see binominal nomenclature, trinominal nomenclature.
binomial nomenclature
A system of nomenclature using two names, first established for animals by Linnaeus in 1758 and now generally referred to as binominal nomenclature.
adj. [L. bis, two; nomen, name] Consisting of two words or names.
binominal nomenclature
The system of nomenclature adopted by the International Congress of Zoology, by which the scientific name of an animal is designated by both a generic and specific name.
adj. [L. bis, two; nota, mark] Having two rounded spots.
adj. [L. bini, pair; ovum, egg] Pertaining to two ova.
adj. [L. bis, two; nucleus, kernel] Having two nuclei.
see biological assay.
adj. [L. bis, two; dim. oculus, eye] Having two ocelli.
n. [Gr. bios, life; koinos, common] A community of plants and animals that occupy a particular habitat; a biotic community; see biocoenosis.
n. [Gr. bios, life; chemeia, chemistry] Biological or physiological chemistry; the chemistry of living organisms.
n. [Gr. bios, life; choros, place] A subdivision of biocycle, comprising a group of similar biotopes large enough to form a recognizable habitat; see chore.
n. [Gr. bios, life; chroma, color] Any natural pigment found in a living organism; see indigoid biochrome, quinone biochrome, schemochrome.
n. [Gr. bios, life; koinos, common] All of the living components of an environment.
n.; pl. -noses [Gr. bios, life; koinos, common] 1. A community of organisms occupying a biotope. 2. An aggregation of fossils comprised of the remains of organisms living ...
n. [Gr. bios, life; L. communicare, to communicate] The process of conveyance or transfer of information between non-human organisms.
see biological control.
n. [Gr. bios, life; kyklos, circle] Subdivisions of the biosphere: land, sea and freshwater. biodegradable adj. [Gr. bios, life; L. de, down; gradatus, step by step; abilis, ...
n. [Gr. bios, life; demos, people; graphein, to write] A science concerned with the statistical study of the ecology and genetics of a given population.
n. [Gr. bios, life; oikos, house; logos, discourse] The study of the interrelationships of plants and animals and their environment.
n. [Gr. bios, life; elektron, amber] The electric phenomena within living tissues.
n. [Gr. bios, life; energos, active] The science of conditions and laws governing the manifestation of energy in living organisms.
n. [Gr. bios, life; genos, beginning] The hypothetical protoplasmic unit of which cells are composed; precursor of bios.
n. [Gr. bios, life; genesis, beginning] The doctrine that living organisms originate from antecedent life; see abiogenesis, neobiogenesis.
biogenetic law
The recapitulation theory of Haeckel that " ontogeny recapitulates phylogeny"; see palingenesis.
adj. [Gr. bios, life; gennaein, to produce] Being produced from living in or on other living organisms; providing life.
n. [Gr. bios, life; genesis, beginning] The evolution of organisms, comprising ontogeny (individual) and phylogeny (tribal).
n. [Gr. bios, life; ge, earth; chemeia, chemistry] The study of the distribution and movement of chemical elements within living organisms and their interaction with the ...
n. [Gr. bios, life; ge, earth; graphein, to write] That biological science dealing with the geographical distribution of plants and animals; see zoogeography.
n. [Gr. bios, life; herma, mound] A body of rock composed largely of sedentary organisms such as corals and mollusks.
adj. [Gr. bios, life; logos, discourse] Pertaining to biology, the science of living things.
biological assay
The determination of the effect of any stimulus, physical, chemical, biological, physiological, or psychological, by means of the response which it produces in living ...
biological classification
The arrangement of organisms into taxa on the basis of inferences concerning their genetic relationship.
biological clock
An endogenous physiological rhythm, such as metabolic or behavioural rhythmical changes; see circadian.
biological control
The reduction in population of undesirable animals and plants by the intentional introduction of a predator, parasite or disease; biocontrol.
biological productivity
The increase in biomass, normally measured in protein-time units.
biological races
Noninterbreeding sympatric populations that are morphologically alike, but physiologically different due to preference for food or other hosts; see sibling species.
biological species
concept A concept at the species level stressing reproductive isolation, and the possession of a genetic program effecting such isolation; biospecies; see species.
n. [Gr. bios, life; logos, discourse] The scientific study of living things.
n. [Gr. bios, life; L. luminescere, to grow light] The production of light by living organisms, as occurs in the insect orders of Collembola, Homoptera, Diptera and ...
n. [Gr. bios, life; lysis, to loosen] The disintegration of life or organic matter; the decomposition of organic matter as a result of the activity of living organisms; ...
n. [Gr. bios, life; L. massa, quantity, bulk] The total weight of a population or other specified group of individuals per unit of area or volume.
n. [Gr. bios, life] A major biological community of living organisms characterized by distinctive dominant vegetation and associated animals.
n. [Gr. bios, life; meteoros, high in the air; logos, discourse] The science of the relationship of plants and animals to weather.
n. [Gr. bios, life; metron, measure] An indicator organism that determines climate and condition acceptability.
n. [Gr. bios, life; metron, measure] The statistical study of biological phenomena; the application of mathematics to the study of living organisms; see biostatistics.
adj. [Gr. bios, life; morphe, form] Concerning the development or change of form of a living organism by the formation of tissues.
n. [Gr. bios, life; on, being] 1. A living, independent organism; a living cell or unit; synonymous with "individual". 2. Sometimes used as a variant spelling of biome; a ...
see ecology.
См. bionomics.
n. [Gr. bion, life; on, being] A living thing; a member of a biome.
adj. [Gr. bios, life; phagein, to eat] Pertaining to an organism that feeds upon other living organisms or tissues.
n. [Gr. bios, life; phorein, to carry] A hypothetical ultimate supramolecular unit capable of life.
См. biophor.
see bioluminescence.
n. [Gr. bios, life; physis, nature] The application of the laws of physics to the study of living organisms.
n. [Gr. bios, life; plassein, to mold] Protoplasm.
n. [Gr. bios, life; plassein, to mold] 1. A minute mass of living protoplasm. 2. An amoeboid cell.
n. [Gr. bios, life; poiesis, making] The origination of the first living thing, as well as the preceding chemical history.
n.; pl. -ties [Gr. bios, life; L. potens, powerful] The potential of a tissue developing into different structures.
n. [Gr. bios, life; opsis, sight] The study of tissues of living organisms.
biordinal crochets
(ARTHROPODA: Insecta) Crochets of larvae arranged in a single series or row, but having two alternating lengths; see ordinal.
n. [Gr. bios, life] Plant and animal life; organic nature.
n. [Gr. biosis, manner of life] 1. The condition of being alive. 2. The condition of a specific mode of life.
see biological species concept.
n. [Gr. bios, life; spelaion, cave; logos, discourse] The scientific study of cave-dwelling organisms.
n. [Gr. bios, life; sphaira, ball] That portion of the earth that contains living organisms, encompassing the soil, air and water.
n. [Gr. bios, life; stasis, a standing] The ability of organisms to tolerate environmental alterations without being changed themselves.
n. pl. [Gr. bios, life; statos, stationary] The science of the structure of organisms in relation to their function.
n. [Gr. bios, life; statos, stationary] The branch of biometry that deals with vital statistics.
n. [Gr. bios, life; stroma, bed] (MOLLUSCA: Bivalvia) Biocoenosis of hard shelled, sedentary organisms or sediment from them.
n. [Gr. bios, life; synthesis, composition] The formation of an organic compound by an organism.
see ecosystem.
n. [Gr. bios, life; systema, an ordered arrangement of things] The study of the biology of populations in respect to evolution and variation of a taxon; experimental ...
n. [Gr. bios, life] The fauna and flora of an area or region.
adj. [Gr. biotikos, of life] Of or pertaining to life.
biotic insecticide
An organism used to suppress a local pest population.
biotic potential
1. The reproductive potential of a species. 2. An estimate of the rate of increase of a species in the absence of predators, parasites or other inhibiting factors.
n. [Gr. bios, life; tonos, tension] The ratio between assimilation and dissimilation of a hypothetic unit, cell, organ or organelle (biogen).
n. [Gr. bios, life; topos, place] 1. An area that is uniform in its main climatic, soil and biotic conditions. 2. An ecological niche with suitable conditions for certain ...
spicules (PORIFERA) Amphidiscs; having scalloped disks that may occur at both ends of the rhabdome.
n. [Gr. bios, life; typos, type] A group of genotypically identical individuals; frequently used interchangeably with the term race.
see binovular.
adj. [L. bis, two; ovum, egg] Having two ovules.
adj. [L. bis, two; parasitus, one who eats at the table of another] Being a parasite upon or in a parasite.
adj. [L. bis, two; parentalis, parent] Pertaining to or derived from two parents.
adj. [L. bis, two; paries, wall] Provided with two paries.
adj. [L. bis, two; parere, to beget] Producing two young at a time.
adj. [L. bis, two; partitus, divided] Having two distinct parts; bifid.
bipartite uterus
A uterus with paired, tubular uteri that fuse at the point of junction with the vagina.
adj. [L. bis, two; pecten, comb] Having branches on two sides like the teeth of a comb.
adj. [L. bis, two; pectunculus, small scallop] Minutely pectinate.
adj. [L. bis, two; penna, feather] Twice pinnate; bipenniform adj..
bipinnaria larva
(ECHINODERMATA: Asteroidea) The free-swimming, bilaterally symmetrical larva; characterized by ciliated preoral and postoral bands and extending onto lobes projecting from ...
adj. [L. bis, two; plicatus, fold] Twice plaited or folded.
n. [L. bis, two; poculum, cup] (PORIFERA) A spicule (microsclere) with a curved shaft and cup-shaped expansion at either end; in Iophon , one discoid end and one pointed or ...
adj. [L. bis, two; Gr. pous, foot] Having one pair of legs. bipody n; see tetrapod.
adj. [L. bis, two; polus, pole] 1. Having two poles or processes. 2. Pertaining to the polar regions.
n. [L. bis, two; polus, pole] 1. Being bipolar. 2. Pertaining to the polar regions, as comparing the flora and fauna between the northern regions and the southern regions, ...
adj. [L. bis, two; pro, before; stare, to stand] Having two prostates.
adj. [L. bis, two; pupilla, pupil of the eye] 1. Having two pupils. 2. Having two ocelli or spots that resemble two pupils.
biradial cleavage
Cleavage in which the tiers of blastomeres are symmetrical with regard to the first cleavage plane.
biradial symmetry
A type of symmetry in which an organism consists of radially arranged parts, equally arranged on each side of a median longitudinal plane.
adj. [L. bis, two; radiatus, rayed] Having two rays or spokes; see diactinal, diaxon.
adj. [L. bis, two; ramus, branch] Consisting of two branches.
biramous appendage
(ARTHROPODA: Crustacea) An appendage with two rami; also antennule or antenna with two flagellar elements; not all appendages of a crustacean are biramous.
biramous parapodium
(ANNELIDA) A parapodium having bundles of setae on both noto- and neuropodium.
adj. [L. bis, two; refringens, refractive] Having double refraction, high or low according to the difference between the refractive indices.
adj. [L. bis, two; rostrum, beak] Having two beak-like processes.
birotulate spicules
(PORIFERA) A spicule having a disc or series of radial, umbrella-like spokes at both ends; amphidiscs.
birth pore
Uterine pore; birth opening.
n. [L. bis, two; segmentum, piece] One of two equal segments of a line.
adj. [L. bis, two; septum, partition] Having two partitions.
adj. [L. bis, two; series, row] Arranged in two rows, or subdivided into two series.
biserial crochets
(ARTHROPODA: Insecta) Crochets of larvae with proximal ends arranged in two, usually concentric rows; see serial crochets.
adj. [L. bis, two; serra, saw] Having two notched or saw-teeth.
adj. [L. bis, two; seta, bristle] Having two bristle-like appendages.
adj. [L. bis, two; sexus, sex] 1. Of or pertaining to both sexes. 2. A population composed of functional males and females. 3. An individual possessing functional male and ...
adj. [L. bis, two; sinuare, to bend] Twice winding or bending; having two sinuations or notches.
adj. [L. bis, two; stratum, layer] Having two layers of tissues.
adj. [L. bis, two; sulcus, groove] Of or pertaining to twice scored or grooved.
adj. [L. bis, two; theke, case] 1. Having two thecae. 2. (ANNELIDA) Having two spermathecae.
adj. [L. bis, two; uncus, hook] Having two hooks.
adj. [L. bis, two; valens, strong] 1. Having two completely or partially homologous chromosomes pairing during the first meiotic division; see univalent. 2. Double or joined ...
adj. [L. bis, two; valvae, a folding door] Having two valves or parts; clamlike.
n., n. pl. [L. bis, two; valvae, a folding door] A class of marine, estuarine or freshwater bivalve mollusks, in which the body is enclosed within two calcareous valves, or ...
См. bivalves.
adj. [L. bis, two; vitta, band] Having two broad longitudinal stripes or vittae.
n. [L. bivius, two-way] (ECHINODERMATA: Asteroidea) Collectively, the two rays of a sea star, between which lies the madreporite; see trivium.
adj. [L. bis, two; It. volta, time] Having two sets of offspring a year; see polyvoltine.
adj. [L. bis, two; vulva, vulva] Having two vulvae in a single female.
n. [A.S. blaeddre, bag] Any membranous sac or vesicle filled with air or fluid.
n. [A.S. blaed, leaf] 1. Any elongate, flattened, usually stiff structure shaped like a leaf, sword or knife. 2. (ARTHROPODA: Insecta) The lacinia or galea. 3. (NEMATA) ...
n. [Gr. blastos, bud] Hypothetical animal ancestral to all metazoans; inferred from the blastula as a common stage in the development of higher invertebrate animals.
n.; pl. -temata [Gr. blastema, bud] 1. Undifferentiated cells that later develop into an organ or structure. a. The part of an organism that gives rise to a new organism, as ...
n. [Gr. blastos, bud; kephale, head] (ARTHROPODA: Insecta) The head of an embryo.
n. [Gr. blastos, bud; ochema, vehicle] (CNIDARIA) A reproductive bud in certain medusae.
n. [Gr. blastos, bud; chylos, juice] Fluid contained in a blastocoel.
(e) n. [Gr. blastos, bud; koilos, hollow] The primary cavity formed during the embryological development of animals; segmentation cavity; the subgerminal cavity.
n. [Gr. blastos, bud; kystis, bladder] (PLATYHELMINTHES: Cestoda) In Trypanorhynca, a posterior bladder of the metacestode into which the body is withdrawn.
n. [Gr. blastos, bud; kytos, container] An embryonic cell before differentiation.
n. [Gr. blastos, bud; derma, skin] The primary epithelium formed in early embryonic development of many invertebrates; germinal membrane.
n. [Gr. blastos, bud; genesis, beginning] 1. Development by asexual reproduction, or of an organ or part from a blastema. 2. The transmission of inherited characters by ...
adj. [Gr. blastos, bud; genos, birth] Originating in germ cells.
См. blastoids.
n., n. pl. [Gr. blastos, bud; eidos, form] A class of extinct echinoderms of the former Subphylum Pelmatoza; Ordovician to Permian.
n. [Gr. blastos, bud; kinesis, movement] Displacements, rotations and revolutions of an embryo within an egg.
n. [Gr. blastos, bud; meros, part] Cells formed during primary cleavage of an egg, before the formation of a distinct gastrula stage.
n. [Gr. blastos, bud; phorein, to bear] 1. The external opening of the enteron of a gastrula. 2. (ANNELIDA) The endodermal cells brought into an internal position in the ...
n. [Gr. blastos, bud; poros, passage] The mouthlike opening from the archenteron to the exterior during the gastrula stage of development.
n. [Gr. blastos, bud; stylos, pillar] (CNIDARIA: Hydrozoa) The living axial portion of a modified gonangium, from which numerous medusae are budded.
n. [Gr. blastos, bud; zoion, animal; eidos, form] A zooid or individual produced by asexual reproduction; see oozooid.
n., pl. -lae [Gr. dim. blastos, bud] A stage near the end of cleavage, in the form of a hollow sphere bounded by a single layer of cells.
n. [A.S. blastr, a swelling] Any vesicle or raised spot on the surface of an organism.
Blochmann's body
(ARTHROPODA) Any intracellular organisms in the egg; mainly bacteria; thought to be symbiotic.
n. [A.S. blod, blood] The variously colored or colorless fluid circulating in the vascular system or body cavity of animals, usually containing respiratory pigments, and ...
blood cells
Cellular elements of the blood; hemocytes; plasmatocytes.
blood channel
(ARTHROPODA: Insecta) In predacious larvae, a channel, either internal (duct or tube) or external (excavation or groove), usually extending the full length of the inner ...
blood gills
(ARTHROPODA: Insecta) Thin walled respiratory or osmoregulatory evaginations continuous with the hemocoel and filled with blood, occurring in, but not confined to aquatic ...
blood rooms
(ARTHROPODA: Crustacea) In Conchostraca, a network of anastomosing cavities in the body that function in blood circulation.
blood sinus
(MOLLUSCA: Bivalvia) A blood vessel which is irregular in shape without specialized walls.
blood tube
see blood channel.
blood vessel
Any vessel or canal facilitating blood circulation.
n. [OF. block, a clod of earth] A large irregular spot or marking.
v. [uncertain origin] To dull; to neutralize or dilute.
-shaped see navicular, scaphoid.
n. [A.S. bodig, body] 1. The physical structure of an organism. 2. The main part of an organism as compared to its limbs or appendages. 3. The trunk. 4. The corpus.
body cavity
The principal cavity between the body wall and internal organs of an organism: coelom, pseudocoelom or hemocoelom.
body of Giardini
see chromatin body.
body ring
(ARTHROPODA: Crustacea) In Notostraca, the combined tergite and sternite of a single somite, with or without legs.
body somite
(ARTHROPODA: Crustacea) A unit division comprising thorax and abdomen; see cephalic somite.
body valve
see intermediate valve.
body wall
1. The integument, the outer layer of many invertebrates, comprising the epidermis (hypodermis) and the cuticle. 2. (BRYOZOA) The wall enclosing the body cavity of a ...
body whorl
see last whorl.
n. pl. [A.S. bolster, support] (MOLLUSCA) A pair of supports and muscle attachments for the radula.
n. [Gr. bolos, lump] Any rounded mass, such as collected or chewed food.
n. pl. [F. bombe, convex; L. frons, forehead] (ARTHROPODA: Insecta) A rounded, blister-like protuberance on the forward part of the head.
adj. [F. bombe, convex] A curved or rounded surface; blister-like.
bombycic acid
(ARTHROPODA: Insecta) An acid utilized by certain moths to dissolve the gum binding the silk threads of the cocoon at imago emergence.
adj. [Gr. bombycinus, silken] Of silk, or pale yellow resembling fresh spun silk.
book gill
(ARTHROPODA: Chelicerata) In Merostomata, a gill composed of thin plates or lamella.
book lung
(ARTHROPODA: Chelicerata) A series of leaf-like respiratory pouches of arachnids, located on the internal ventral surface of the abdomen, and believed to be modified ...
n. [NL. Bopyrus, type genus] (ARTHROPODA: Crustacea) In Malacostraca, a postlarva of an epicaridean isopod that attaches to a permanent host.
Bordas' gland
(ARTHROPODA: Insecta) A paired, or fused into one, accessory gland of the sting apparatus of certain Hymenoptera, composed of multiple, densely packed cells whose ...
adj. [L. boreas, north wind] Of or belonging to the northern biogeographical region.
n. [A.S. borian, bore] 1. An invertebrate that bores. 2. (ARTHROPODA: Insecta) An adult or larva that makes channels in woody or vegetable tissue. 3. (MOLLUSCA: ...
n.; pl. bosses [F. bosse, hump] 1. Any protruberant part, prominence or swelling. 2. (ARTHROPODA: Chelicerata) In Arachnida, a smooth lateral prominence at the base of a ...
adj. [F. bosse, hump] Being covered with small knob-like projections, composed of or covered with small protuberances.
bothridial seta
(ARTHROPODA: Chelicerata) Variously shaped seta inserted into a bothridium.
n.; pl. -ria [Gr. dim. bothros, trench] 1. (ARTHROPODA: Chelicerata) A chitinous cavity or projecting cup in which a bothridial seta is inserted; (bothridial seta + ...
n. pl. [Gr. bothros, trench; trichos, hair] (ARTHROPODA: Insecta) Slender seta arising from indentions in the tegument; bothronic adj..
n.; pl. -ria [Gr. bothros, trench] (PLATYHELMINTHES: Cestoda) Dorsal or ventral grooves on the scolex that may be variously modified in the form of ruffles, or fused so as ...
n. pl. [Gr. botrys, bunch of grapes; knide, nettle] (CNIDARIA: Anthozoa) The septal filaments of certain mesentaries of tube anemones.
adj. [Gr. botrys, bunch of grapes; eidos, form] In the form of a bunch or cluster of grapes.
botryoidal tissue
(ANNELIDA: Hirudinoidea) Connective tissue present in the enteric canals.
n. [Gr. botrys, bunch of grapes; logos, discourse] The science of organizing objects or concepts into groups and clusters.
see lagena, ampulla, ampulliform.
bouquet stage
A meiotic prophase stage, including leptotene, zygotene and pachytene, in certain species where the chromosomes are oriented by one or both ends towards one point of the ...
n. [F. bourrelet, circular pad] . A ridgelike prominence or rounded edge. 1. (ARTHROPODA: Insecta) see parameres. 23. (ECHINODERMATA) A raised prominence on the ...
bourses copulatrices
see copulatory chamber.
n. [F. bouton, bud] (ARTHROPODA: Insecta) A lappet-like terminal process of the glossa of bees; spoon; flabellum.
see arc, arcuate.
n.; pl. boxes [A.S., fr. buxus, boxwood] (MOLLUSCA: Bivalvia) A pair of empty, attached hinged (valves) shells of oysters.
n. pl. [Gr. brachys, short; elytron, sheath] (ARTHROPODA: Insecta) Having shortened wing covers or elytra.
n. pl. [L. brachium, arm] 1. Processes like arms. 2. (ARTHROPODA: Insecta) a. Paired, unfused processes resembling arms surrounding the aedeagus; clasper; paramere. b. A ...
adj. [L. brachium, arm] 1. Pertaining to an arm-like process or appendage. 2. (ARTHROPODA: Insecta) Pertaining to the fore wing.
brachial basket
(ARTHROPODA: Insecta) In Odonata, a barrel-like chamber in the anterior two-thirds of the rectum that functions by the intake and expulsion of water; rectal gills.
brachial canal
(CNIDARIA: Scyphozoa) A canal in the oral arm of medusae.
brachial valve
(BRACHIOPODA) A valve containing any skeletal support for the lophophore, generally smaller than the pedicle valve; dorsal valve.
n.; pl. brachidia [L. dim. brachium, arm] (BRACHIOPODA) The internal skeleton or brachial support for the lophophore, consisting of a calcareous loop or spire.
n.; pl. -lariae [L. dim. brachium, arm] (ECHINODERMATA: Asteroidea) The free-swimming, ciliated larva that develops from the bipinnaria and is characterized by three ...
n. [L. dim. brachium, arm] (ECHINODERMATA: Crinoidea) The slender arm or arms extending from the ambulacral groove.
n. [L. brachium, arm; Gr. phorein, to bear] (BRACHIOPODA) Blades of the secondary shell projecting from the side of the notothyrium and forming anteromedian boundaries of ...
См. brachiopods.
n.; n. pl. [Gr. brachys, short; pous, foot] A phylum of relatively small, solitary coelomates enclosed within a bivalved shell and usually attached to the substrate by a ...
n.; pl. -taxes [Gr. brachium, arm; taxis, arrangement] (ECHINODERMATA: Crinoidea) A series of brachials extending from radial or biradial to the distal extremity of ...
see brachia.
adj. [Gr. brachys, short; keras, horn] Bearing short antennae.
n. [Gr. brachys, short; daktylos, digit] Abnormally short digits.
n. [Gr. brachys, short; meiosis, to make smaller] Meiosis with the second meiotic division omitted.
adj. [Gr. brachys, short; pleuron, side] (ARTHROPODA: Insecta) Pertaining to shortened pleura or side plates.
adj. [Gr. brachys, short; pous, foot] Bearing a short stalk or legs.
adj. [Gr. brachys, short; pteron, wing] (ARTHROPODA: Insecta) Having short or abnormally short wings that do not cover the abdomen; see macropterous.
brachypterous neoteinic
see nymphoid reproductive.
see brachypterous.
adj. [Gr. brachys, short; stoma, mouth] (ARTHROPODA: Insecta) Having a short proboscis, as certain Diptera.
n.; pl. -eae [Gr. brachys, short; tracheia, windpipe] (ARTHROPODA: Chelicerata) In Acari, an elongate, saclike structure, sometimes branched, that functions in ...
adj. [Gr. brachys, short; oura, tail] Having a reduced abdomen; having a short tail.
braconid venom gland
(ARTHROPODA: Insecta) A type of venom gland where numerous gland tubes end basically in the reservoir that has muscles but no glandular elements; see apid venom gland.
n. [L. bractea, small leaf] (CNIDARIA: Hydrozoa) A protective medusoid (hydrophyllium or phyllozooid) siphonophoran with a simple or branched gastrovascular canal.
adj. [L. bractea, small leaf; forma, shape] Bractlike.
adj. [L. bractea, small leaf] With numerous bracts.
n. [Gr. bradys, slow; auxesis, growth] A form of heterauxesis in which the growth process of a part is less than that of the whole; see isauxesis.
n. [Gr. bradys, slow; genesis, beginning] Retarded development in ontogeny; see tachygenesis.
adj. [Gr. bradys, slow; telos, completion] Pertaining to evolution, evolving slowly; slower than the standard rate; see horotelic.
n. [A.S. braegen, brain] 1. The nervous center of invertebrates. 2. (ARTHROPODA) The cephalic nerve mass; the encephalon, the supraesophageal ganglion; the ...
brain hormone
(ARTHROPODA: Insecta) A secretion of the brain activating the prothoracic glands.
n.; pl. branches [OF. branche, branch] 1. That which puts forth branches. 2. A primary division of a taxonomic group. 3. A gill.
see ramify.
n.; pl. -chiae [Gr. branchia, gills] Respiratory organs; a gill; a ctenidium.
adj. [Gr. branchia, gills] Pertaining to gills or branchiae.
branchial aperture
The exterior opening of a gill chamber.
branchial basket
(ARTHROPODA: Insecta) In Odonata, a chamber of the rectum that contains the rectal gills.
branchial carina
(ARTHROPODA: Crustacea) In Decapoda, that part of the carapace extending posteriorly from the opening (orbit) in the anterior face over the branchial region.
branchial chamber
(ARTHROPODA: Crustacea) That area between the body and carapace enclosing the branchiae; the gill chamber.
branchial cleft
A gill slit.
branchial crown
(ANNELIDA: Polychaeta) A structure surrounding the terminal mouth composed of ciliated, bipinnate filaments functioning in suspension filter feeding and respiration; ...
branchial glands
1. (ARTHROPODA: Crustacea) Masses of connective- tissue cells, lacking ducts, that surround the venous channels in branchiae. 2. (MOLLUSCA: Cephalopoda) Glands along the ...
branchial heart
(MOLLUSCA: Cephalopoda) One of two hearts that pumps blood to the gills of squid.
branchial passage
(MOLLUSCA: Bivalvia) A passage in gills that carries parts of the exhalant water system.
branchial plume
(ANNELIDA: Polychaeta) In certain Sabellidae and Serpulidae, a structure around the terminal mouth comprised of semicircular lobes bearing a few to a series of grooved, ...
branchial ray
A gill ray.
branchial region
(ARTHROPODA: Crustacea) In Decapoda, the lateral part posterior to the pterygostomial region, overlying the branchiae.
branchial siphon
(MOLLUSCA) The incurrent siphon.
adj. [Gr. branchia, gills] Having gills or branchiae.
adj. [Gr. branchia, gills; colere, to inhabit] Parasitizing gills.
adj. [Gr. branchia, gills; forma, shape] Shaped like gills.
adj. [Gr. branchia, gills; kardia, heart] Pertaining to gills and heart.
branchiocardiac carina
(ARTHROPODA: Crustacea) That part of a carapace dividing the branchial and cardiac region.
branchiocardiac groove
(ARTHROPODA: Crustacea) In Decapoda, an oblique groove on each side of the carapace separating the branchial and cardiac regions.
branchiocardiac sinus
(ARTHROPODA: Crustacea) One of several sinus channels that facilitates blood flow from the gills to the pericardial sinus and then to the heart.
adj. [Gr. branchia, gills; L. pallium, mantle] (MOLLUSCA) Pertaining to the gill and mantle.

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