Pronunciation: (dī"u-stē'mu), [key]
—pl. -ma•taPronunciation: (-mu-tu). [key]
1. Cell Biol.the modified protoplasm at the equator of a cell, existing before mitotic division.
2. Dentistry.a space between two teeth, esp. a space between a canine and an incisor of the upper jaw into which a lower canine occludes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.