Os″te‐o‐clast (?), n. [Osteo- + Gr. κλα̑ν to break.]
1. (Physiol.) A myeloplax.
☞ The osteoclasts occur usually in pits or cavities which they appear to have excavated, and are supposed to be concerned in the absorption of the bone matrix.
2. An instrument for performing osteoclasis.