frustule

noun
frus·​tule | \ ˈfrəs-(ˌ)chül How to pronounce frustule (audio) , -(ˌ)t(y)ül\

Definition of frustule

: the 2-valved siliceous shell of a diatom

First Known Use of frustule

1848, in the meaning defined above

History and Etymology for frustule

French, from Latin frustulum, diminutive of frustum

Keep scrolling for more

Learn More about frustule

Statistics for frustule

Look-up Popularity

Time Traveler for frustule

The first known use of frustule was in 1848

See more words from the same year

More from Merriam-Webster on frustule

Britannica.com: Encyclopedia article about frustule

Comments on frustule

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

WORD OF THE DAY

to spread over or through

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Syn City

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!