os·​te·​o·​clast | \ ˈä-stē-ə-ˌklast How to pronounce osteoclast (audio) \

Definition of osteoclast

: any of the large multinucleate cells closely associated with areas of bone resorption

Other Words from osteoclast

osteoclastic \ ˌä-​stē-​ə-​ˈkla-​stik How to pronounce osteoclast (audio) \ adjective

Examples of osteoclast in a Sentence

Recent Examples on the Web Resorption is the breakdown of old bones by osteoclasts, a type of bone cell. Susan Scutti, CNN, 8 May 2017 The first, osteoclasts, break down bone tissue as part of the process of repairing and maintaining any damage. Danny Lewis, Smithsonian, 16 Jan. 2017

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

First Known Use of osteoclast

1872, in the meaning defined above

History and Etymology for osteoclast

International Scientific Vocabulary oste- + Greek klastos broken — more at clast

Learn More About osteoclast

Time Traveler for osteoclast

Time Traveler

The first known use of osteoclast was in 1872

See more words from the same year

Dictionary Entries Near osteoclast




See More Nearby Entries 

Statistics for osteoclast

Cite this Entry

“Osteoclast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/osteoclast. Accessed 18 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for osteoclast


os·​teo·​clast | \ ˈäs-tē-ə-ˌklast How to pronounce osteoclast (audio) \

Medical Definition of osteoclast

1 : any of the large multinucleate cells closely associated with areas of bone resorption (as in a fracture that is healing) — compare chondroclast
2 : an instrument for performing osteoclasis

Other Words from osteoclast

osteoclastic \ ˌäs-​tē-​ə-​ˈklas-​tik How to pronounce osteoclast (audio) \ adjective

More from Merriam-Webster on osteoclast

Britannica.com: Encyclopedia article about osteoclast


Test Your Vocabulary

Name That Color

  • a light greenish blue color
  • Name that color:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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