1. osteoclast

noun. cell that functions in the breakdown and resorption of bone tissue.


  • -clast (English)
  • κλαστός (Ancient Greek (to 1453))
  • osteo- (English)

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Example sentences of the word osteoclast

1. Noun, singular or mass
When blood pH drops below pH 7.35, osteoclast cells become activated and resorb, or destroy, bone.

2. Adjective
At a high pH of 7.4 or above, osteoclast activity is suppressed.