Definition of theca

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Theca (n.) The more or less cuplike calicle of a coral.

Lern More About Theca

Gymnoblastea :: Gymnoblastea (n. pl.) The Athecata; -- so called because the medusoid buds are not inclosed in a capsule.
Gonophore :: Gonophore (n.) A sexual zooid produced as a medusoid bud upon a hydroid, sometimes becoming a free hydromedusa, sometimes remaining attached. See Hydroidea, and Illusts. of Athecata, Campanularian, and Gonosome..
Phylactocarp :: Phylactocarp (n.) A branch of a plumularian hydroid specially modified in structure for the protection of the gonothecae.
Teleophore :: Teleophore (n.) Same as Gonotheca.
Gallipot :: Gallipot (n.) A glazed earthen pot or vessel, used by druggists and apothecaries for containing medicines, etc..
Blastostyle :: Blastostyle (n.) In certain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata..
Vagina :: Vagina (n.) A sheath; a theca; as, the vagina of the portal vein..
Podothecae :: Podothecae (pl. ) of Podothec.
Theca :: Theca (n.) The wall forming a calicle of a coral.
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..
Thecaphore :: Thecaphore (n.) A surface or organ bearing a theca, or covered with thecae..
Rhinotheca :: Rhinotheca (n.) The sheath of the upper mandible of a bird.
Pyxidium :: Pyxidium (n.) The theca of mosses.
Graduate :: Graduate (n.) A graduated cup, tube, or flask; a measuring glass used by apothecaries and chemists. See under Graduated..
Dithecal :: Dithecal (a.) Alt. of Dithecou.
Podotheca :: Podotheca (n.) The scaly covering of the foot of a bird or reptile.
Urn :: Urn (n.) A hollow body shaped like an urn, in which the spores of mosses are contained; a spore case; a theca..
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..
Thecasporous :: Thecasporous (a.) Having the spores in thecae, or cases..
Gonotheca :: Gonotheca (n.) A capsule developed on certain hydroids (Thecaphora), inclosing the blastostyle upon which the medusoid buds or gonophores are developed; -- called also gonangium, and teleophore. See Hydroidea, and Illust. of Campanularian..
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