| intrauterine device expulsion | Spontaneous loss of intrauterine devices from the uterus. (12 Dec 1998) |
|---|---|
| focusing device | <microscopy> A device which effectively increases the angular aperture of the electron beam illuminating the object, rendering the focus more critical. (05 Aug 1998) |
| left-ventricular assist device | Mechanical pump inserted at some point in the circulation to parallel the activity of the left ventricle and thereby reduce its load. (05 Mar 2000) |