Ophthalmic somite see acron

ophthalmocercaria n. [Gr. ophthalmos, eye; kerkos, tail] (PLATY: Trematoda) A cercaria with eyespots.

ophthalmopod n. [Gr. ophthalmos, eye; pous, foot] (ARTHRO: Crustacea) In Malacostraca, an eye-stalk; a movable peduncle with a terminal eye.

ophthalmotheca n. [Gr. ophthalmos, eye; theke, case] (AR-THRO: Insecta) That part of the pupal case that covers the eyes.

opisthaptor n. [Gr. opisthen, behind; haptein, to fasten] (PLATY: Trematoda) In Monogenea, the posterior attachment organ (sucker or disc). see Baer's disc.

opisthocline a. [Gr. opisthen, behind; clinein, to lean] 1. Leaning backward. 2. (MOLL: Gastropoda) The growth direction of a helicocone shell; commonly referring to growth lines.

opisthocyrt a. [Gr. opisthen, behind; kyrtos, curved] 1. Arched backward. 2. (MOLL: Bivalvia) Referring to sloping in a direction posterior from the hinge axis; used to describe hinge teeth or the slope of the shell. 3. (MOLL: Gastropoda) The growth direction of a helicocone shell; commonly referring to growth lines.

opisthodelphic a. [Gr. opisthen, behind; delphys, womb] (NEMATA) Having uteri parallel and posteriorly directed. see amphidelphic, monodelphic, prodelphic, didelphic.

opisthodetic a. [Gr. opisthen, behind; detos, bind] (MOLL: Bi-valvia) Said of the ligament that extends posterior to the umbo (beak). see amphidetic, parivincular.

opisthogenesis n. [Gr. opisthen, behind; genesis, beginning] Development from posterior end of the body forward.

opisthognathous a. [Gr. opisthen, behind; gnathos, jaw] Having mouth parts directed posteriorly.

opisthogoneate a. [Gr. opisthen, behind; gonos, seed] Having the genital opening situated terminally, at the posterior end of the body. see progoneate.

opisthogonia n. [Gr. opisthen, behind; gonia, corner] (AR-THRO: Insecta) The anal angle of the hind wings.

opisthogyrate a. [Gr. opisthen, behind; L. gyratus, revolve] 1. Curving backwards. 2. (MOLL: Bivalvia) Having the beak pointing posteriorly.

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