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ostiole

noun
os·​ti·​ole | \ ˈä-stē-ˌōl How to pronounce ostiole (audio) \

Definition of ostiole

: a small bodily aperture, orifice, or pore

Examples of ostiole in a Sentence

Recent Examples on the Web

 As its spores ripen, the puffball’s outer skin, or cuticle, develops one or two small holes called ostioles through which millions of dry spores escape at the smallest disturbance. — Dave Taft, New York Times, "Puff, the Magic Mushroom," 1 Nov. 2017

First Known Use of ostiole

1721, in the meaning defined above

History and Etymology for ostiole

New Latin ostiolum, from Latin, diminutive of ostium

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