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Слова на букву ooec-phen (732)

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pedal stridulating organ
(ARTHROPODA: Insecta) In male Hemipterous Corixidae, the spinose area on the inside of each front femur when drawn over the edge of the clypeus.
pedalium
n.; pl. -alia [Gr. pedalion, rudder] (CNIDARIA) Bladelike expansions at each corner of the umbrella that bear a motile and contractile hollow tentacle or group of ...
pedamina
n. pl.; sing. -um [L. pes, foot; mina, projecting point] (ARTHROPODA: Insecta) In Lepidoptera, the aborted forelegs of a nymph.
peddler
n. [ME. pedlere, fr. ped, basket] (ARTHROPODA: Insecta) A larva of Cassidinae Coleoptera, having a forked caudal process supporting excrement and exuviae.
pedicel
n. [L. pediculus, little foot] 1. Any small or short stalk or stem supporting an organ or other structure. 2. (ARTHROPODA: Chelicerata) In Arachnida, the attenuated first ...
pedicellariae
n. pl. [L. pediculus, little foot] (ECHINODERMATA) In Echinoidea and Asteroidea, stalked pincer-like structures, usually armed with teeth, used for removal of foreign ...
pedicellate
adj. [L. pediculus, little foot] Supported by a pedicel or petiole.
pedicellus spines
(ARTHROPODA: Insecta) In Hymenoptera and Diptera, sensory spines at the bases of the antennae that play a role in the perception of gravity and possibly current stimuli.
pedicle
n. [L. pediculus, little foot] (BRACHIOPODA) A variously developed, tough flexible stalk protruding from the bivalve shell; functioning as a tether, a pivot around which the ...
pedicle collar
(BRACHIOPODA) The two deltidial plates curved around the pedicle base, may or may not be fused.
pedicle foramen
(BRACHIOPODA) Ring-like perforation of a shell through which the pedicle passes.
pedicle groove
(BRACHIOPODA) When present, subtriangular groove dividing the ventral pseudointerarea medially and allowing passage for pedicle.
pedicle muscles
(BRACHIOPODA) 1. In Articulata, adjuster muscles external to the pedicle and longitudinal fibrils in the connective tissue of the pedicle. 2. In Inarticulata, muscles ...
pedicle plate
(BRACHIOPODA) A tongue-like shell deposit inside the dorsal edge of the labiate foramen.
pedicle sheath
(BRACHIOPODA) A tube projecting posteroventrally from the ventral umbo; probably enclosing the pedicle in the young stages of shell development with a supra-apical pedicle ...
pedicle tube
(BRACHIOPODA) A tube of secondary shell enclosing the proximal part of the pedicle.
pedicle valve
(BRACHIOPODA) The valve from which the pedicle usually emerges, generally larger than the brachial valve; ventral valve.
pedigerous
adj. [L. pes, foot; gerare, to carry] Bearing footlike appendages.
pedipalp
См. pedipalpus.
pedipalpus
n.; pl. -pi [L. pes, foot; palpare, to touch] (ARTHROPODA: Chelicerata) The second pair of cephalothoracic appendages, variously modified as a pincerlike claw, or simple ...
pedisulcus
n. [L. pes, foot; sulcus, furrow] (ARTHROPODA: Insecta) In Diptera, an indentation near the base of the second hind tarsal segment of some Simuliidae.
pedium
n.; pl. -dia [Gr. pedion, open plain] (ARTHROPODA: Insecta) In scarabaeoid larvae, the central part of the epipharynx, bare and soft-skinned, between the haptomerum and ...
pedofossae
n. pl. [L. pes, foot; fossa, ditch] (ARTHROPODA: Chelicerata) In Acari, concavities in the podosoma into which legs II, III and IV can be tucked.
pedogenesis
see paedogenesis.
pedothecae
n. pl. [Gr. pedon, ground; theke, case] (ARTHROPODA: Insecta) In Diptera pupae, the adhering sheaths of the legs.
peduncle
n. [L. pedunculus, small foot] A stem, stalk or petiole supporting an organ or other structure; pedunculate adj..
pedunculate bodies
see corpora pedunculata.
pedunculate papillae
(NEMATA) A modified, stalked, genital papillae of males.
pelagic
adj. [Gr. pelagos, open sea] Pertaining to the open sea; ocean-dwelling.
pelagosphera
n. [Gr. pelagos, open sea; sphaira, ball] (SIPUNCULA) The second larval stage, characterized by a terminal organ for temporary attachment to the substratum, a band of ...
Pelecypoda
see Bivalvia.
pellicle
n. [L. pellis, skin] A thin skin, film or layer.
pellions
see rosettes.
pellucid
adj. [L. per, through; lucere, to shine] Transparent or clear; not colored.
pelma
n. [Gr. pelma, sole] (ECHINODERMATA: Crinoidea) The stalk and holdfast beneath the crown.
peloderan
adj. [Gr. pella, cup, bowl; deros, skin] (NEMATA) Pertaining to caudal alae that meet at the male tail tip; see leptoderan.
pelopsiform
adj. [Gr. pelops, genus of orbatid mites; L. forma, shape] (ARTHROPODA: Chelicerata) In Acari, having the form of the genus Pelops.
peltate
adj. [Gr. pelte, shield] Shield-shaped; escutcheon. peltation n.
peltidium
n. [Gr. pelte, shield] (ARTHROPODA: Chelicerata) In acari, the prodorsal shield; see schizopeltid.
peltogonopod
n. [Gr. pelte, shield; gone, seed; pous, foot] (ARTHROPODA: Diplopoda) Accessory gonopods; often plate-like shields of the gonopods.
pen
n. [L. penna, feather] (MOLLUSCA: Cephalopoda) In Teuthoidea, an internal shell that may be slender, thin, delicate, horny or lanceolate; see gladius.
pencil
n. [L. dim. penis, tail] 1. A brush of hair or bristles; see brushes. 2. (ARTHROPODA: Insecta) In Diptera, sensory hair on the distal part of the antenna.
pendent
adj. [L. pendere, to hang] Hanging; suspended from above; pendulous adj..
penellipse
n. [L. paene, almost; Gr. elleipsis, leaving out] (ARTHROPODA: Insecta) In larvae, a series of crochets usually more than a semicircle and less than a complete circle; see ...
penetrant
see stenotele.
penial chaeta
См. penial seta.
penial seta
(ANNELIDA: Oligochaeta) One of the extra seta near the male pore that facilitate the passage of sperm during copulation; usually long, sculptured, and in paired bundles. ...
penicilla
n.; pl. -ae [L. penicillum, painter\'s brush] (ARTHROPODA: Crustacea) In certain Anaspidacea, dentate setae on the mandible.
penicilliform
adj. [L. penicillum, painter\'s brush] Having the form of a brush or pencil; tipped with fine hairs or fibers.
penicillum
См. penicillus.
penicillus
n.; pl. -li [L. penicillum, painter\'s brush] A pencil or brush of setae or hair.
peniferum
n. [L. penis, male copulatory organ; ferum, bear] (ARTHROPODA: Crustacea) In Ostracoda, the varied, sclerotized male copulatory apparatus that bears the penis and hinge ...
penis
n.; pl. -es [L. penis, male copulatory organ] A male copulatory organ or paired organs for conveying sperm to the genital tract of a female; see phallus, aedeagus.
penis funnel
see anellus.
penis valves
(ARTHROPODA: Insecta) In Hymenoptera, genital clasper organs.
pennaceous
adj. [L. penna, feather] Resembling a feather, as a marking; penniform.
pentacrinoid
adj. [Gr. pente, five; krinon, lily] (ECHINODERMATA: Crinoidea) A larval stage following the cystidean stage that attaches to the substrate or adult crinoid and develops a ...
pentactula larva
(ECHINODERMATA: Holothuroidea) A young larva with 5 primary tentacles and one or two podia that eventually settle to the bottom and assume the adult mode of existence.
pentaglossate
adj. [Gr. pente, five; glossa, tongue] (MOLLUSCA) Having no central tooth and teeth of the same shape that increase in size toward the edge of the radula.
pentagonal
adj. [Gr. pente, five; gonia, angle] Five-sided; having 5 angles.
pentamerous
adj. [Gr. pente, five; meros, part] Composed of 5 similar parts; having 5-jointed tarsi.
pentaradiate
adj. [Gr. pente, five; L. radius, ray] Arranged in 5 rays.
pentazonian segment
(ARTHROPODA: Diplopoda) A segment formed of 5 separate sclerites; the tergum, 2 lateral pleurites and 2 sternites.
penultimate
adj. [L. paene, almost; ultimus, last] Next to the last; the whorl preceding the last.
peptonephridia
n. pl. [Gr. pepton, digested; nephros, kidney] (ANNELIDA: Oligochaeta) Organs opening into the buccal cavity of pharynx (supposedly modified nephridia).
peraeon
see pereon.
peraeonite
see pereonite.
peraeopod
see pereopod.
percurrent
adj. [L. per, through; currere, to run] Extending through the entire length; continuous.
percutaneous
adj. [L. per, through; cutis, skin] Penetration through the skin.
peregrine
see allochthonous, anthropochorous.
pereion
see pereon.
pereionite
see pereonite.
pereiopod
see pereopod.
pereiopod
see pereopod.
pereon
n. [Gr. peraioun, to convey] 1. (ARTHROPODA: Crustacea) A thoracic region of Isopoda; anterior portion of the trunk bearing thoracopods, except for maxillipedal somites and ...
pereonite
n. [Gr. peraioun, to convey; -ites, joined to] (ARTHROPODA: Crustacea) Somite of the pereon; peraeonite, pereionite.
pereopod
n. [Gr. peraioun, to convey; pous, foot] (ARTHROPODA: Crustacea) Thoracic appendage used in locomotion and for seizing and handling food; ambulatory leg; walking leg; ...
perfect mesentaries
(CNIDARIA: Anthozoa) Mesenteries spanning the gastrovascular space and inserting on the body wall and actino-pharynx; see imperfect mesentaries.
perfoliate
adj. [L. per, through; folium, leaf] With terminal joints leaflike and surrounding the stalk connecting them.
perforate
adj. [L. per, through; forare, to bore] Pierced; having pores or small openings.
pergameneous
adj. [L. pergamena, parchment] Of the nature or texture of parchment.
perianal
adj. [Gr. peri, around; L. anus] Situated or occurring around the anus.
periaxial
adj. [Gr. peri, around; L. axis] To surround an axis.
peribuccal
adj. [Gr. peri, around; L. bucca, mouth cavity] Encircling the buccal cavity.
pericardial cavity
see dorsal sinus.
pericardial cells
(ARTHROPODA: Insecta) Nephrocytes present on the surface of the heart, or lying on the pericardial septum or the alary muscles.
pericardial gland
1. (ARTHROPODA: Insecta) see prothoracic gland. 2. (MOLLUSCA: Gastropoda) Marginal cells of the pericardium in Prosobranchia; filled with yellow-green granules.
pericardial sinus
see dorsal sinus.
pericardium
n. [Gr. peri, around; kardia, heart] The cavity enclosing the heart as well as membranes lining the cavity and covering the heart; pericardial adj..
pericaryon
see perikaryon.
pericentric inversion
An inversion that includes the centromere.
perichaetine
adj. [Gr. peri, around; chaite, mane] (ANNELIDA: Oligochaeta) Referring to setal location, when there is more than 8 per segment, encircling a segment; perichaetal condition.
perideltidium
n.; pl. -ia [Gr. peri, around; dim. delta, ] (BRACHIOPODA) One of a pair of raised triangular areas on either side of the pseudodeltidium with both striae and growth lines; ...
periderm
n. [Gr. peri, around; derma, skin] (CNIDARIA: Hydrozoa) A hydroid perisarc.
perienteric
adj. [Gr. peri, around; enteron, gut] Surrounding the alimentary tract.
periflagellar membrane
(PORIFERA) A membrane between choanocyte collar tentacles and the apical flagellum.
perigastric
adj. [Gr. peri, around; gaster, stomach] Surrounding the visera.
perignathic girdle
(ECHINODERMATA: Echinoidea) A calcareous ridge on the inner side of the peristomal edge of the test that serves as the attachment for the muscles of the masticatory ...
perihemal
adj. [Gr. peri, around; haima, blood] (ECHINODERMATA) Various tubular coelomic sinuses that form channels of the hemal system.
perikaryon
n.; pl. -karya [Gr. peri, around; karyon, nucleus] The portion of the cell that contains the nucleus.
perilemma
n.; pl. -ae [Gr. peri, around; lemma, bark] (ARTHROPODA) A layer of glial cells beneath the fibrous neurilemma glanglia.
perilymph
n. [Gr. peri, around; L. lympha, water] (MOLLUSCA: Cephalopoda) In Octopodidae, the liquid that fills the outer sac of the statocyst.
perimetrical attachment organ
(BRYOZOA: Stenolaemata) Collarlike membrane attached to the tentacle sheath and to both the outer end of the membranous sac and skeletal body wall.
perinaeum
see perineum.
perinductura
n. [Gr. peri, around; L. inductura, a covering] (MOLLUSCA: Gastropoda) A continuous outer shell layer formed by the edge of the mantle reflected back over the outer lip. ...
perineal
adj..
perineum
n. [Gr. peri, around; enein, to empty out] (ARTHROPODA: Insecta) The area between the posterior of the anus and the anterior part of the external genitalia, especially in ...
perineural
adj. [Gr. peri, around; neuron, nerve] Surrounding a nerve or nerve cord.
perineurium
n. [Gr. peri, around; neuron, nerve] (ARTHROPODA: Insecta) A layer of cells beneath the neural lamella in the nerve sheath.
perinotum
see girdle.
periodical pleometrosis
(ARTHROPODA: Insecta) In social Hymenoptera, a colony founded by a group of queens, however, after emergence of the first workers, all but one female disperse; see ...
periodicity
adj. [Gr. peri, around; hodos, way] Functions that occur at regular intervals or times; rhythm.
periodomorphosis
n. [Gr. peri, around; hodos, way; morphosis, shaping] (ARTHROPODA: Diplopoda) In some male Julida, regression from a copulatory stage to a noncopulatory stage in ...
periopticon
see lamina.
perioral disc
see labial disc.
periostracal glands
(MOLLUSCA: Bivalvia) Glands of the mantle edge that secrete the base layer of the periostracum.
periostracal groove
(MOLLUSCA: Bivalvia) The groove between the tentacular fold and the shell fold that houses the periostracal glands.
periostracum
n. [Gr. peri, around; ostrakon, shell] A thin skin or horny covering on the exterior of the shells of most Mollusca and Brachiopoda; periostracal adj..
periparturient period
That period before, during and after giving birth.
periphallic organs
(ARTHROPODA: Insecta) Genital processes on the posterior ventral surface of segment 9.
peripharyngeal ganglion
(BRYOZOA) Prolongation of the cerebral ganglion around the oral opening.
peripheral
adj. [Gr. peri, around; pherein, to carry] To or toward the surface; distant from the center.
peripheral nerve net
(NEMATODA: Adenophorea) A subcuticular neural meshwork that connects the setae and papillae on the whole body surface of some marine forms.
peripheral nervous system
Contains all sensory cell bodies (exceptions rare), plus local plexuses in the body wall or viscera, local ganglia of either sensory or motor-and-internuncial composition, ...
periplasm
n. [Gr. peri, around; plassein, to mold] (ARTHROPODA: Insecta) A bounding layer formed by cytoplasm in the egg that lies just beneath the vitelline membrane and completely ...
peripneustic
adj. [Gr. peri, around; pneustikos, of breathing] (ARTHROPODA: Insecta) Having 9 pairs of functional spiracles; usually a prothoracic pair and 8 abdominal pairs; see ...
peripodial cavities
(ARTHROPODA: Insecta) A cavity formed during metamorphosis when the imaginal disc becomes invaginated beneath the larval epidermis.
peripodial membrane
(ARTHROPODA: Insecta) The cell layer or wall surrounding the peripodal cavity and at pupation, comes to form part of the epidermis of the general body wall.
peripodial sac
(ARTHROPODA: Insecta) In metamorphosis, the membrane enclosing the imaginal disc (bud).
periproct
n. [Gr. peri, around; proktos, the anus] 1. The distal piece or segment of the body containing the anus. 2. (ANNELIDA: Oligochaeta) The pygomere or pygidium. 3. ...
perisarc
n. [Gr. peri, around; sarx, flesh] (CNIDARIA: Hydrozoa) A yellowish or brown chitinous covering of a colony that is secreted by the epidermis; the periderm.
perisomatic plates
(ECHINODERMATA: Crinoidea) Tegminal plates: interradials, interambulacrals, or radianal plates.
perispicular spongin
(PORIFERA) Spongin surrounding spicules.
peristalsis
n. [Gr. peri, around; stalsis, constriction] Rhythmic movement of the wall of the enteron or other tubular organs, traveling in successive contractions in one direction.
peristethium
see mesosternum.
peristigmatic glands
(ARTHROPODA: Insecta) Glands that secrete a hydrophobic material preventing wetting of the spiracles.
peristome
n. [Gr. peri, around; stoma, mouth] 1. The region surrounding the mouth. 2. (ANNELIDA) Segment modified to form part of the head and surround the mouth; buccal segments; see ...
peristomium
n. [Gr. peri, around; stoma, mouth] (ANNELIDA: Oligochaeta) The lateral and ventral margins of the mouth, behind the prostomium.
perisympathetic system
(ARTHROPODA: Insecta) Neurohemal organs connected to the transverse nerves of the ventral sympathetic nervous system, that release the products of the neurosecretory cells ...
peritoneal membrane
see peritoneum.
peritoneal sheath
(ARTHROPODA: Insecta) A network of anastomosing muscle fibers that holds together the ovarioles of the ovary.
peritoneum
n. [Gr. peri, around; tonos, strain; eous, composed of] A thin serous membrane lining the body cavity; covering and supporting the organs; peritoneal adj..
peritreme
n. [Gr. peri, around; trema, hold] 1. (ARTHROPODA: Chelicerata) In Acari, a concave plate surrounding a stigma (=spiracle). 2. (ARTHROPODA: Insecta) An annular ...
peritrophic membrane
(ARTHROPODA) An extracellular sheath in which chitin is present, separating the apical surface of the mid-gut that protects the gut cells from mechanical damage caused by ...
perivisceral
adj. [Gr. peri, around; L. viscus, entrail] Surrounding the viscera.
permanent haplometrosis
(ARTHROPODA: Insecta) A colony that is founded by a single female whose initial offspring are sterile females, then later towards the end of the annual cycle reproductives ...
permanent hybrid
Hybrid that maintains its heterozygosity by balanced lethal factors in its genotype.
permanent parasite
A parasite living its entire adult life within or on a host.
permanent pleometrosis
(ARTHROPODA: Insecta) In social Hymenoptera, the foundation of colonies through swarming; see primary pleometrosis.
permesothyridid foramen
(BRACHIOPODA) A pedicle opening found mostly within the ventral umbo.
peronium
n.; pl. -ia [Gr. perona, fibula] (CNIDARIA: Hydrozoa) Thick epidermal tract from the base of the tentacle on to the bell.
peroral
adj. [L. per, through; os, mouth] By way of, or through the mouth.
perradius
n.; pl. -ia [L. per, through; radius, ray] In Echinodermata and Cnidaria, body parts and organs located along a limited number of radial planes; primary or 1st order ...
pervious
adj. [L. per, through; via, way] Perforate or open.
petaloid
adj. [Gr. petalon, leaf] Resembling petals.
petasma
n. [Gr. petasma, something spread out] (ARTHROPODA: Crustacea) Complex male copulatory organs with coupling hooks on the first pair of pleopods.
petiole
n. [L. petiolus, little foot] 1. A stock or stem. 2. (ARTHROPODA: Insecta) a. In Hymenoptera Apocrita, the narrow constricted zone at the base of the gaster. b. In ...
petraliiform colony
(BRYOZOA: Gymnolaemata) In Cheilostomata, encrusting unilaminate colony loosely attached by the protruding basal walls of zooids or by basally budded kenozooids.
petricolous
adj. [L. petra, rock; colere, to inhabit] Dwelling within stones, crevices or in hard clay.
pH
A symbol of a scale measuring the acidity or alkalinity of a medium, with a value of 7.0 indicating neutral, lower values indicating acidity, and higher values indicating ...
phacella
n. pl.; sing. -um [Gr. phakellos, bundle] (CNIDARIA: Scyphozoa) Tentacle-like gastric filaments covered with gastrodermis, nematocysts and gland cells.
phaeno
- see pheno.
phage
n. [Gr. phagein, to eat] A bacterial virus.
phagocytes
n. pl. [Gr. phagein, to eat; kytos, container] Cells in a body, fixed or moving, capable of active ingestion and digestion; see plasmatocytes.
phagocytosis
n. [Gr. phagein, to eat; kytos, container] The ingestion of solid particles by a cell; phagocytic adj..
phagosome
n. [Gr. phagein, to eat; soma, body] A membrane- bound vesicle in the cytoplasm of a cell resulting from phagocytosis.
phagotroph
n. [Gr. phagein, to eat; trophon, food] An organism that ingests food by phagocytosis.
phallic gland
(ARTHROPODA: Insecta) In some Orthoptera, a gland that lies on the posterior part of the accessory gland tubule mass to the left of the ejaculatory duct and opens on the ...
phallic organ
(ARTHROPODA: Insecta) Median intromittent apparatus of males located on segment 9 and consisting of phallus or phallomeres and lobes from the phallobase; penis.
phallobase
n. [Gr. phallos, penis; basis, bottom] (ARTHROPODA: Insecta) Proximal part of the phallus of males, a large basal structure supporting the aedeagus; a thecal fold or ...
phallocrypt
n. [Gr. phallos, penis; kryptos, hidden] (ARTHROPODA: Insecta) In males, a pocket of the phallobase or wall of the genital chamber containing the base of the aedeagus.
phallomeres
n. pl. [Gr. phallos, penis; meros, part] (ARTHROPODA: Insecta) Genital phalic lobes formed at the sides of the gonopore of males, that form an inner pair of mesomers that ...
phallosome
n. [Gr. phallos, penis; soma, body] (ARTHROPODA: Insecta) Complex structure ssurrounding the gonopore between the proctiger, gonocoxite and sternum IX in male ...
phallotheca
n.; pl. -thecae [Gr. phallos, penis; theke, case] (ARTHROPODA: Insecta) In males, a fold or tubular extension of the phallobase partly or completely enclosing the ...
phallotrema
n. [Gr. phallos, penis; trema, hole] (ARTHROPODA: Insecta) In males, the opening of the duct at the tip of the aedeagus.
phallotreme
См. phallotrema.
phallus
n. [Gr. phallos, penis] (ARTHROPODA: Insecta) The male copulatory organ; the parameres together with the aedeagus; the aedeagus; the penis; phallic adj..
phanere
n. [Gr. phaneros, visible] Any prominent tegumentary formation, i.e., setae or seta-like processes.
phanerocephalic pupa
(ARTHROPODA: Insecta) In Diptera, the pupal stage between the cryptocephalic pupa and the pharate adult.
phanerocodonic
adj. [Gr. phaneros, visible; kodon, bell] (CNIDARIA: Hydrozoa) Of or pertaining to detached and free-swimming medusa of a hydroid colony.
phaneromphalous
adj. [Gr. phaneros, visible; omphalos, the navel] (MOLLUSCA: Gastropoda) A shell with a completely open umbilicus; may be wide, narrow, or very minute; see anomphalous.
phanerotaxy
n. [Gr. phaneros, visible; taxis, arrangement] (ARTHROPODA: Chelicerata) The number and arrangements of phaneres; phanerotactic adj..
phanerotoxic
adj. [Gr. phaneros, visible; toxikos, poison] (ARTHROPODA: Insecta) Erucism caused by toxic setae of lepidopterous caterpillars; see lepidopterism.
phaosome
n. [Gr. phaos, light; soma, body] A light-sensitive epidermal organelle; eyespot.
pharate
adj. [Gr. pharos, garment] (ARTHROPODA: Insecta) 1. A stage in metamorphosis that does not usually represent a distinct morphological stage. 2. Any stage of development ...
pharyngeal canal
(CTENOPHORA) The stomodeal canal.
pharyngeal ganglion
see corpora cardiaca.
pharyngeal glands
1. (ARTHROPODA: Insecta) In Hymenoptera: a. Lateral : a long coiled chain of follicles in the antero-dorsal region of the head of worker Apoidea; the source of royal jelly. b. ...
pharyngeal skeleton
see cephalopharyngeal skeleton.
pharyngeal tube
(ARTHROPODA: Insecta) In Siphunculata, the entrance to the cibarial pump; see sac tube, trophic sac.
pharyngeate
См. nonocellate cercariae.
pharynx
n.; pl. pharynges, pharynxes [Gr. pharynx, gullet] 1. In insects, annelids, arachnids and platyhelminths the anterior part of the foregut, between the mouth and the ...
pharynx of Leisblein
see esophageal bulb.
phasic castration
Pertaining to individuals in which the gonads are inhibited in development due to seasonal or ontogenetic conditions; see alimentary castration, nutricial castration.
phasic muscle
(MOLLUSCA: Bivalvia) In oysters, the fast muscle; adductor muscle that reacts quickly but does not endure.
phasma
n.; pl. -ata [Gr. phasma, apparition] (NEMATODA: Adenophorea) Phasmid-like areas on the tails of some Desmoscolecida; tiny canals lead away from these structures, but no ...
phasmid
n. [Gr. phasma, apparition; edios, like] (NEMATA) One of a pair of lateral caudal pores (sensilla) connecting with a glandular pouch that alledgedly functions as a ...
Phasmidia
see Secernentea.
phena
pl. of phenon.
phene
n. [Gr. phainein, to appear] A genetically controlled phenotypic character.

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