Definition of theca

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Theca (n.) The chitinous cup which protects the hydranths of certain hydroids.

Lern More About Theca

Dithecal :: Dithecal (a.) Alt. of Dithecou.
Potecary :: Potecary (n.) An apothecary.
Sertularian :: Sertularian (n.) Any species of Sertularia, or of Sertularidae, a family of hydroids having branched chitinous stems and simple sessile hydrothecae. Also used adjectively..
Apothecary :: Apothecary (n.) One who prepares and sells drugs or compounds for medicinal purposes.
Ovicapsule :: Ovicapsule (n.) Same as Ootheca.
Gymnoblastea :: Gymnoblastea (n. pl.) The Athecata; -- so called because the medusoid buds are not inclosed in a capsule.
Vaginal :: Vaginal (a.) Of or pertaining to a vagina; resembling a vagina, or sheath; thecal; as, a vaginal synovial membrane; the vaginal process of the temporal bone..
Thecaphore :: Thecaphore (n.) A surface or organ bearing a theca, or covered with thecae..
Tetrathecal :: Tetrathecal (a.) Having four loculaments, or thecae..
Hydrothecas :: Hydrothecas (pl. ) of Hydrothec.
Weight :: Weight (v. t.) A scale, or graduated standard, of heaviness; a mode of estimating weight; as, avoirdupois weight; troy weight; apothecaries' weight..
Hydrothecae :: Hydrothecae (pl. ) of Hydrothec.
Hydrotheca :: Hydrotheca (n.) One of the calicles which, in some Hydroidea (Thecaphora), protect the hydrants. See Illust. of Hydroidea, and Campanularian..
Gnathothecae :: GnathothecAe (pl. ) of Gnathothec.
Podothecae :: Podothecae (pl. ) of Podothec.
Ruffle :: Ruffle (v. t. & i.) The connected series of large egg capsules, or oothecae, of any one of several species of American marine gastropods of the genus Fulgur. See Ootheca..
Ootheca :: Ootheca (n.) An egg case, especially those of many kinds of mollusks, and of some insects, as the cockroach. Cf. Ooecium..
Urn :: Urn (n.) A hollow body shaped like an urn, in which the spores of mosses are contained; a spore case; a theca..
Blastostyle :: Blastostyle (n.) In certain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata..
Apothecaries :: Apothecaries (pl. ) of Apothecar.
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