theca

== English == === Etymology === From New Latin, from Latin thēca, from Ancient Greek θήκη (thḗkē, “a case, box, receptacle”), from τίθημι (títhēmi, “put, set, place”). Doublet of tay. === Pronunciation === IPA(key): /ˈθiːkə/ === Noun === theca (plural thecas or thecae) (biology) Any of several external cases or sheaths. (biology, botany) The pollen-producing organ usually found in pairs and forming an anther. (biology, medicine) The theca folliculi: the twin layers of cells surrounding the basal lamina of an ovarian follicle. (biology, medicine) The thecal sac: the portion of the dura mater that surrounds the spinal cord and the cauda equina. (biology, microbiology, planktology) The membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates. (biology, marine biology) The calcareous wall of a corallite, the exoskeleton of a coral polyp. (biology, microbiology, mycology) A sporangium: a spore case. (Christianity) A case for the corporal cloth used in the Eucharist. ==== Derived terms ==== ==== Related terms ==== === Further reading === “theca”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “theca”, in The Century Dictionary and Cyclopedia: […], New York, N.Y.: The Century Co., →OCLC. “theca”, in OneLook Dictionary Search. === Anagrams === 'tache, Tache, Taché, Teach, Tâche, chate, cheat, he-cat, tache, teach == Kikuyu == === Alternative forms === theeca === Pronunciation === IPA(key): /ðɛːɕa/ === Verb === theca (infinitive gũtheca) to pierce, to stab ==== Related terms ==== (Nouns) mũthece class 3 === References === == Latin == === Etymology === Borrowed from Ancient Greek θήκη (thḗkē, “a case, box, receptacle”), from τίθημι (títhēmi, “put, set, place”). === Pronunciation === (Classical Latin) IPA(key): [ˈtʰeː.ka] (modern Italianate Ecclesiastical) IPA(key): [ˈtɛː.ka] === Noun === thēca f (genitive thēcae); first declension a case, envelope, sheath ==== Declension ==== First-declension noun. ==== Descendants ==== === See also === bibliothēca hypothēca === References === “theca”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press “theca”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers "theca", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887) “theca”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette. William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “theca”, in The Century Dictionary and Cyclopedia: […], New York, N.Y.: The Century Co., →OCLC.