adj. [Gr. opsios, late; blastos, bud]
A delay in cleavage, and therefore a prolonged period before hatching; winter egg; see tachyblastic.

Online Dictionary of Invertebrate Zoology. . 2005.

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Look at other dictionaries:

  • tachyblastic — adj. [Gr. tachys, quick; blastos, bud] Referring to thin shelled eggs that begin cleavage immediately after oviposition and develop quickly; summer egg; see opsiblastic …   Dictionary of invertebrate zoology

  • winter egg — Resting egg; where applicable, a type of egg with a thick shell that protects the egg over winter; opsiblastic; see summer egg …   Dictionary of invertebrate zoology

  • gastrotrich — gastrotrichan /gas tro tri keuhn/, adj. /gas treuh trik/, n. any of the microscopic, multicellular animals of the class or phylum Gastrotricha, of fresh or salt waters, characterized by bands of cilia on the ventral surface of the bottle shaped… …   Universalium

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