ostiole

noun
os·ti·ole | \ˈä-stē-ˌōl \

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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ostiole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ostiole

1721, in the meaning defined above

History and Etymology for ostiole

New Latin ostiolum, from Latin, diminutive of ostium

Keep scrolling for more

Learn More about ostiole

Dictionary Entries near ostiole

ostinato

ostiolar

ostiolate

ostiole

ostium

ostler

ostleress

Statistics for ostiole

Look-up Popularity

Time Traveler for ostiole

The first known use of ostiole was in 1721

See more words from the same year

More from Merriam-Webster on ostiole

See words that rhyme with ostiole

Comments on ostiole

What made you want to look up ostiole? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a state of commotion or excitement

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!