noun, plural testae [tes-tee] . Botany.
the outer, usually hard, integument or coat of a seed.

1790–1800; < Neo-Latin, Latin; see test2

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World English Dictionary
testa (ˈtɛstə)
n , pl -tae
a hard protective outer layer of the seeds of flowering plants; seed coat
[C18: from Latin: shell; see test²]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
testa   (těs'tə)  Pronunciation Key 
Plural testae (těs'tē')
See seed coat.
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