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Word of the Day Wednesday, June 10, 2026

theca

/θiːkə/ noun · British & US
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What does theca mean?

noun

A theca is a protective or enclosing case, especially one for a flower or a seed. In biology, it can also refer to a membrane or a sac that encloses a cell or an organ.

Example

"The theca of the flower protected the delicate petals from the harsh weather."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymologically related

Synonyms for theca

Antonyms of theca

Rhymes with theca