Pronunciation: in′vō-lū′krŭm, -loo′kră
1. An enveloping membrane, a sheath or sac.
2. The sheath of new bone that forms around a sequestrum.
The information shown above for involucrum is provided by Stedman's.
* Stedman's, part of Lippincott Williams & Wilkins, provide a comprehensive line of health-science publications for healthcare professionals and medical students.