os·​te·​o·​blast ˈä-stē-ə-ˌblast How to pronounce osteoblast (audio)
: a bone-forming cell
osteoblastic adjective

Examples of osteoblast in a Sentence

Recent Examples on the Web Bone metabolism is characterized by the reabsorption of bone by osteoclast cells and the laying down of new bone by osteoblast cells. Dr. Keith Roach, oregonlive, 30 Aug. 2022 The material then serves as 3D scaffolds for osteoblasts, or bone cells. Emily Matchar, Smithsonian, 18 July 2019 The second, osteoblasts, create the matrices that bones form around, Byrne reports. Danny Lewis, Smithsonian, 16 Jan. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'osteoblast.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary

First Known Use

1867, in the meaning defined above

Time Traveler
The first known use of osteoblast was in 1867

Dictionary Entries Near osteoblast

Cite this Entry

“Osteoblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/osteoblast. Accessed 22 Sep. 2023.

Kids Definition


os·​te·​o·​blast ˈäs-tē-ə-ˌblast How to pronounce osteoblast (audio)
: a cell that forms bone

Medical Definition


os·​teo·​blast ˈäs-tē-ə-ˌblast How to pronounce osteoblast (audio)
: a bone-forming cell

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