testa

[tes-tuh] /ˈtɛs tə/
noun, plural testae
[tes-tee] /ˈtɛs ti/ (Show IPA).
Botany
1.
the outer, usually hard, integument or coat of a seed.
Origin
1790-1800; < Neo-Latin, Latin; see test2
British Dictionary definitions for testa

testa

/ˈtɛstə/
noun (pl) -tae (-tiː)
1.
a hard protective outer layer of the seeds of flowering plants; seed coat
Word Origin
C18: from Latin: shell; see test²
testa in Science
testa
  (těs'tə)   
Plural testae (těs'tē')
See seed coat.