sequestral se·ques·tral (sĭ-kwěs'trəl)
adj.
Of, relating to, or characterized by a sequestrum.
sequestrum se·ques·trum (sĭ-kwěs'trəm)
n. pl. se·ques·tra (-trə)
A fragment of dead tissue, usually bone, that has separated from healthy tissue as a result of injury or disease.