podomere n. [Gr. pous, foot; meros, part] (ARTHRO) An individual segment of a limb; a podite.
podophthalmite n. [Gr. pous, foot; ophthalmos, eye] (ARTHRO: Crustacea) In segmented eyestalks, one of 2 segments bearing the cornea.
podosoma n. [Gr. pous, foot; soma, body] (ARTHRO: Chelicerata) In Acari, the region of the body that bears the legs.
podospermia n. [Gr. pous, foot; sperma, seed] (ARTHRO: Chelicerata) A type of sperm transfer by the male chelicera (gonopod) of certain Acari, to the paired orifices of the female receptaculum seminis. see tocospermia.
poecilacanthous armature (PLATY: Cestoda) Armature with hooks on tentacles of differing sizes, shapes and arrangements with chainettes present.
poecilandry n. [Gr. poikilos, various; aner, man] More than one form of male. see poecilogyny.
poecilocyttares n.pl. [Gr. poikilos, various; kyttasos, comb] (ARTHRO: Insecta) A type of nest of Vespidae in which the layers of brood comb are supported by the outer covering and a central support, as the limb of a tree, sometimes regarded as a group Poecilocyttares. see phragmocyttar-ous.
poecilogeny n. [Gr. poikilos, various; gennaein, to produce] (ARTHRO: Insecta) In Diptera, larval polymorphism with more than one form, some being paedogenic and others developing normally into winged sexual adults.
poecilogony n. [Gr. poikilos, various; gonos, progeny] 1. Development in certain invertebrate animals of the same species producing two kinds of young, although the adults are exactly alike. 2. The development of two or more larval forms of the same sex. poecilogonous a. see poecilog-eny.
poecilogyny n. [Gr. poikilos, various; gyne, wife] (ARTHRO: Insecta) More than one form of female.
poecilonymy, pecilonymy n. [Gr. poikilo, varied; onyma, name] 1. The use of two or more terms to indicate the same thing. 2. A synonym, i.e., a systematic name, as of a species or genus, being designated and later regarded as an incorrect form, rejected and replaced with another more correctly applied.
Pogonophora, pogonophorans n.; n.pl. [Gr. pogonophoros, wearing a beard] A phylum of sedentary marine worms that are the only nonparasitic metazoans that lack a mouth, gut or anus, and are commonly called beard worms.
poikilonymy n. [Gr. poikilo, varied; onyma, name] The combining of names or terms from different systems of nomenclature.
poikilosmotic a. [Gr. poikilos, various; osmos, impulse] Having an internal osmotic pressure varying with the environmental medium.
poikilothermal a. [Gr. poikilos, various; thermos, warm] Coldblooded; having a body temperature that rises or falls with the environmental temperature; ectothermal. poikilotherm n. see homoiothermal.
point mutation Intragenic mutation in which recombination is not impaired.
poiser see halter poison glands 1. (ARTHRO: Insecta) a. In Apocritan Hymen-optera, modified accessory reproductive glands associated with the ovipositor or sting. b. In Lepidoptera larvae, epidermal glands associated with setae or spines. 2. (MOLL: Cephalopoda) The posterior salivary glands.
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