tryma

tryma

[trahy-muh]
noun, plural trymata [trahy-muh-tuh] . Botany.
a nut having an outer shell that becomes tough and dry and eventually splits open, as in the walnut and hickory.

Origin:
1855–60; < Neo-Latin < Greek trŷma hole, equivalent to trȳ́(ein) to rub down, wear away + -ma noun suffix marking result

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tryma (ˈtraɪmə)
 
n , pl -mata
botany a drupe produced by the walnut and similar plants, in which the endocarp is a hard shell and the epicarp is dehiscent
 
[C19: from New Latin, from Greek truma a hole (referring to the hollow drupe), from truein to wear away]

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