Word Study
Sequestrum
CIDE DICTIONARY
Sequestrum, n. [NL. See Sequester.].
A portion of dead bone which becomes separated from the sound portion, as in necrosis. [1913 Webster]
OXFORD DICTIONARY
Sequestrum, n. (pl. sequestra) a piece of dead bone or other tissue detached from the surrounding parts.
Derivative
sequestral adj. sequestrotomy n. (pl. -ies).
Etymology
mod.L, neut. of L sequester standing apart
For further exploring for "Sequestrum" in Webster Dictionary Online