Theca The"ca, n.; pl. {Thec[ae]}. [L., fr. Gr. ? a case to put anything in. See {Tick} a cover.] 1. 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. [1913 Webster]

2. (Zo["o]l.) (a) The chitinous cup which protects the hydranths of certain hydroids. (b) The more or less cuplike calicle of a coral. (c) The wall forming a calicle of a coral. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • thecae — the·cae (theґse) [L.] genitive and plural of theca …   Medical dictionary

  • thecae — n. spore case, sac, capsule (Botany) …   English contemporary dictionary

  • Thecae folliculi — folikulo apvalkalėliai statusas T sritis šlapimo ir lyties aparatas atitikmenys: lot. Thecae folliculi ryšiai: platesnis terminas – kiaušidės folikulas siauresnis terminas – išorinis apvalkalėlis siauresnis terminas – vidinis apvalkalėlis …   Paukščių anatomijos terminai

  • tunica externa thecae folliculi — theca externa …   Medical dictionary

  • tunica interna thecae folliculi — theca interna …   Medical dictionary

  • Theca — A theca (plural thecae) refers to any case, covering, or sheath. In botany, the theca of an angiosperm is half of the anther. An anther and its filament form together a typical (or filantherous) stamen, part of the male floral organ.Each anther… …   Wikipedia

  • theca — A sheath or capsule. [G. theke, a box] t. cordis SYN: pericardium. t. externa SYN: tunica externa thecae folliculi. t. folliculi the wall of a vesicular ovarian follicle. SEE ALSO: tunica externa, tunica interna thecae …   Medical dictionary

  • ЯИЧНИКИ — (ovarium, oophoron, ovarion), женские половые железы, в которых происходит образование и созревание яиц. У низших беспозвоночных животных Я. иногда нет вовсе (губки) или они являются лишь временными скоплениями половых клеток (нек рые… …   Большая медицинская энциклопедия

  • tunica — SYN: tunic. [L. a coat] t. adventitia SYN: adventitia. t. albuginea a dense white collagenous tunic surrounding a structure. t. albuginea of corpora cavernosa [TA] a strong …   Medical dictionary

  • Theca — The̱ca [von gr. ϑηϰη = Abstellplatz; Behältnis; Kasten] w; , ...cae: bindegewebige Hülle eines Organs; eindeutschend auch: Theka (Anat.). The̱ca ex|tẹrna: äußere, faserige Schicht der Theca folliculi. The̲ca ex|te̱rna (the̲cae folli̱culi): neue… …   Das Wörterbuch medizinischer Fachausdrücke

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