Definition of theca

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

Lern More About Theca

Basigynium :: Basigynium (n.) The pedicel on which the ovary of certain flowers, as the passion flower, is seated; a carpophore or thecaphore..
Phylactocarp :: Phylactocarp (n.) A branch of a plumularian hydroid specially modified in structure for the protection of the gonothecae.
Graduate :: Graduate (n.) A graduated cup, tube, or flask; a measuring glass used by apothecaries and chemists. See under Graduated..
Urn :: Urn (n.) A hollow body shaped like an urn, in which the spores of mosses are contained; a spore case; a theca..
Theca :: Theca (n.) The chitinous cup which protects the hydranths of certain hydroids.
Spermathecae :: Spermathecae (pl. ) of Spermathec.
Gonangium :: Gonangium (n.) See Gonotheca.
Glyptotheca :: Glyptotheca (n.) A building or room devoted to works of sculpture.
Gnathotheca :: Gnathotheca (n.) The horney covering of the lower mandible of a bird.
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..
Apothecaries :: Apothecaries (pl. ) of Apothecar.
Endotheca :: Endotheca (n.) The tissue which partially fills the interior of the interseptal chambers of most madreporarian corals. It usually consists of a series of oblique tranverse septa, one above another..
Epitheca :: Epitheca (n.) A continuous and, usually, structureless layer which covers more or less of the exterior of many corals..
Thecata :: Thecata (n. pl.) Same as Thecophora.
Ovicapsule :: Ovicapsule (n.) Same as Ootheca.
Theca :: Theca (n.) A sheath; a case; as, the theca, or cell, of an anther; the theca, or spore case, of a fungus; the theca of the spinal cord..
Druggist :: Druggist (n.) One who deals in drugs; especially, one who buys and sells drugs without compounding them; also, a pharmaceutist or apothecary..
Podothecae :: Podothecae (pl. ) of Podothec.
Weight :: Weight (v. t.) A scale, or graduated standard, of heaviness; a mode of estimating weight; as, avoirdupois weight; troy weight; apothecaries' weight..
Angiosporous :: Angiosporous (a.) Having spores contained in cells or thecae, as in the case of some fungi..
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