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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 343epithelium n., pl. -lums, -lia [Gr. epi, upon; thele, nipple] Anepithelial tissue, covering an external or internal surface.epithelial a.epitoke n. [Gr. epi, upon; tokos, birth] (ANN: Polychaeta) Theposterior sexual portion <strong>of</strong> certain marine worms. seeatoke.epitoky n. [Gr. epi, upon; tokos, birth] (ANN: Polychaeta) Reproduction<strong>of</strong> certain dimorphic swarming worms in whichstructural modifications such as enlarged eyes, nonfunctionalgut and modification <strong>of</strong> parapodia for swimming occur;also called hetero-forms: heteronereis, heterosyllid.see heteronereid.epitorma n.; pl. -mae [Gr. epi, upon; tormos, socket] (AR-THRO: Insecta) In scarabaeoid larvae, a rod extending fromthe inner end <strong>of</strong> the laeotorma. a. Epitorma anterior, whendirected toward the apex <strong>of</strong> the epipharynx. b. Epitormaposterior when directed in the opposite direction.epizoic a. [Gr. epi, upon; zoon, animal] Pertaining to an organismliving on, or attached to the body <strong>of</strong> another animal.see endozoic.epizoicide n. [Gr. epi, upon; zoon, animal; L. caedere, to kill]An agent that destroys epizoa.epizoon n.; pl. epizoa [Gr. epi, upon; zoon, animal] An animalparasite living upon the exterior <strong>of</strong> the body <strong>of</strong> the host; anexternal parasite.epizootic a. [Gr. epi, upon; zoon, animal] An outbreak <strong>of</strong> diseasein animals in which there is an unusually large number<strong>of</strong> cases; identical to an epidemic in humans.epizootiology n. [Gr. epi, upon; zoon, animal; logos, discourse]The field concerned with the study <strong>of</strong> diseases <strong>of</strong>animals involved in an epizootic outbreak.epizygal n. [Gr. epi, upon; zygon, yolk] (ECHINOD: Crinoidea)The distal member <strong>of</strong> a syzygial pair <strong>of</strong> brachials. see hypozygal.epizygial a.epizygum n.; pl. epizyga [Gr. epi, upon; zygon, yolk] (AR-THRO: Insecta) In certain beetle larvae, an elongate plateor bar extending from the zygum toward the clithrum onthe right <strong>of</strong> the epipharynx, or embodied in the tylus; may

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