theca

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English[edit]

Strawberry anther with parallel thecae

Etymology[edit]

From New Latin, from Latin theca, from Ancient Greek θήκη (thḗkē, a case, box, receptacle), from τίθημι (títhēmi, put, set, place).

Noun[edit]

theca (plural thecas or thecae)

  1. (biology) Any external case or sheath.
  2. (botany) The pollen producing organ usually found in pairs and forming an anther.
  3. (medicine) The twin layers of cells surrounding the basal lamina of an ovarian follicle
  4. (microbiology, planktology) The membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates
  5. (marine biology) The calcareous wall of a corallite, the exoskeleton of a coral polyp
Theca (1) of a dinoflagellate

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Latin[edit]

Etymology[edit]

From Ancient Greek θήκη (thḗkē, a case, box, receptacle), from τίθημι (títhēmi, put, set, place).

Pronunciation[edit]

Noun[edit]

thēca f (genitive thēcae); first declension

  1. a case, envelope, sheath

Inflection[edit]

First declension.

Number Singular Plural
nominative thēca thēcae
genitive thēcae thēcārum
dative thēcae thēcīs
accusative thēcam thēcās
ablative thēcā thēcīs
vocative thēca thēcae

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References[edit]

  • theca in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879
  • theca in The Century Dictionary, The Century Co., New York, 1911