stomium

noun

sto·​mi·​um

ˈstōmēəm

plural stomia

-ēə

also stomiums

1

: the thin-walled cells of the annulus marking the line or region of dehiscence of a fern sporangium

2

: the opening in an anther usually between lip cells through which dehiscence occurs

Word History

Etymology

New Latin, from Greek stomion mouth

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