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theca

[ thee-kuh ]

noun

, plural the·cae [thee, -see].
  1. a case or receptacle.
  2. Botany, Mycology.
    1. a sac, cell, or capsule.
    2. a sporangium.
  3. Anatomy, Zoology. a case or sheath enclosing an organ, structure, etc., as the horny covering of an insect pupa or the loose membrane covering the spinal cord.


theca

/ ˈθiːkə /

noun

  1. botany an enclosing organ, cell, or spore case, esp the capsule of a moss
  2. zoology a hard outer covering, such as the cup-shaped container of a coral polyp
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


theca

/ thē /

, Plural thecae thēsē′,-kē′

  1. A case, covering, or sheath, such as the pollen sac of an anther, the spore case of a moss, or the outer covering of the pupa of certain insects.


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Derived Forms

  • ˈthecal, adjective
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Other Words From

  • thecal adjective
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Word History and Origins

Origin of theca1

1655–65; < Latin thēca, from Greek thḗkē “case, cover,” akin to tithénai “to place, put”
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Word History and Origins

Origin of theca1

C17: from Latin thēca, from Greek thēkē case; related to Greek tithenai to place
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Example Sentences

From its sides behind proceed the antenn-cases (Cera-theca); and before from the middle, the tongue-case (Glosso-theca).

A chronic inflammatory involvement of a theca through which an important tendon plays may cause adhesions to form.

In addition to aspirating synovia, the introduction of equal parts of alcohol and tincture of iodin into the theca is necessary.

The body is often provided with not-living external formations “stalk” and “theca” (or “lorica”).

The word theca signified in classical Latin a case or receptacle in which any object was kept.

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