Recent Examples on the WebAs 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, 1 Nov. 2017
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ostiole.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
Etymology
New Latin ostiolum, from Latin, diminutive of ostium
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