endotoky n. [Gr. endon, within; tokos, birth] A form of reproduction in which the eggs develop within the body of the mother. see exotoky.
endotoxin n. [Gr. endon, within; toxikon, poison] A substance produced by microorganisms which is confined within the microbial cell. see exotoxin.
endotrachea n. [Gr. endon, within; trachia, windpipe] (AR-THRO: Insecta) The inner surface or lining of the tracheal tubes. see intima.
endozoic a. [Gr. endon, within; zoon, animal] Living within or passing through an animal. see entozoic, epizoic.
endozone n. [Gr. endon, within; zone, belt] (BRYO: Stenolae-mata) The inner parts of zooids in a colony with weak walls and skeletons.
endozooidal ooecium (bryo) An ooecium opening below the operculum of the parent zooid.
endysis n. [Gr. endysis, putting on] The development of a new cuticle. see molt.
energid n. [Gr. energos, active] Nucleated cytoplasmic aggregations containing all the apparatus necessary for life.
enervose a. [L. ex, out of; nervus, sinew] 1. Without veins. 2. (ARTHRO: Insecta) Lacking wing veins.
engraved a. [OF. engraver, cut] Having superficial irregular impressed lines; exsculptate.
ennomoclones n.pl. [Gr. ennea, nine; klon, twig] (PORIF) Megasclere spicules of the dicranoclone or sphaeroclone type.
ensate a. [L. ensis, sword] Ensiform; sword-shaped.
ensheathed a. [Gr. en, in; A.S. sceath, case] 1. Enclosed by or inserted as in a sheath. 2. During development, cuticle preceding the molt is retained into the next stage.
ensiform a. [L. ensis, sword; forma, shape] Sword-shaped; two-edged and tapering toward a point.
entad adv. [Gr. entos, within; L. ad, toward] Extending in wardly from the exterior; internally. see ectad.
ental a. [Gr. entos, within] Away from the body wall, toward the center of the body. see ectal.
entelechy n.; pl. -chies [Gr. en, in; telos, end; echein, to hold] 1. An actuality or realization as opposed to potentiality. 2. A vital force or agent directing growth and life.
enteric a. [Gr. enteron, intestine] Pertaining to the enteron or alimentary canal.
enterocoel, enterocoele n. [Gr. enteron, intestine; koilos, hollow] Coelom that arises as an outpocketing of the archenteron. enterocoelic a.
enterocoely n. [Gr. enteron, intestine; koilos, hollow] The process of forming the perivisceral cavity.
enteroic a. [Gr. enteron, intestine] (ANN) Pertaining to the excretory system when it opens into the gut lumen. see exoic.
enteron n. [Gr. enteron, intestine] The digestive cavity of multicellular animals.
enteronephric a. [Gr. enteron, intestine; nephros, kidney] (ANN: Oligochaeta) Having nephridia opening into the gut lumen. see exonephric.
enterosegmental organs (ANN: Oligochaeta) In Moniligas-trida, paired structures containing a bundle of glandular tubes bound together by a delicate connective tissue investment on the dorsal face of the post-gizzard gut.
enterostome n. [Gr. enteron, intestine; stoma, mouth] (CNID) Aboral opening of the actinopharynx leading to the gas-trovascular cavity.
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