Testa definition

tĕstə
Frequency:
(bot.) The hard outer covering or integument of a seed.
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The protective, often hard outer coat of a seed.
noun
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Seed coat.

The testa develops from the tissue, the integument, originally surrounding the ovule.

noun
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(marine biology) The external calciferous shell, or endoskeleton, of an echinoderm; the test.
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Other Word Forms

Noun

Singular:
testa
Plural:
testae

Origin of testa

  • Latin shell

    From American Heritage Dictionary of the English Language, 5th Edition

  • Borrowing from Latin testa.

    From Wiktionary