Definition of testa in English:

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Pronunciation: /ˈtestə/

noun (plural testae /-tē/)

The protective outer covering of a seed; the seed coat.
Example sentences
  • The outer testae were removed and seeds placed in the light on filter paper soaked with sterile distilled water.
  • Sufficient moisture must be present to penetrate the testa or seed coat, but not so much that the seed rots or that the oxygen level in the soil is reduced.
  • Wheat grains consist of the seed coat, or testa, which surrounds the endosperm and embryo.


Late 18th century: from Latin, literally 'tile, shell'.

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