noun, plural diastemata [dahy-uh-stee-muh-tuh] .
Cell Biology. the modified protoplasm at the equator of a cell, existing before mitotic division.
Dentistry. a space between two teeth, especially a space between a canine and an incisor of the upper jaw into which a lower canine occludes.

1350–1400; Middle English < Late Latin < Greek: interval, equivalent to diastē, variant stem of diastánai to stand apart + -ma noun suffix denoting the result of action

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World English Dictionary
diastema (ˌdaɪəˈstiːmə)
n , pl -mata
1.  an abnormal space, fissure, or cleft in a bodily organ or part
2.  a gap between the teeth
[C19: New Latin, from Greek: gap, from diistanai to separate; see diastasis]

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American Heritage
Medical Dictionary

diastema di·a·ste·ma (dī'ə-stē'mə)
n. pl. di·a·ste·ma·ta (-mə-tə)

  1. A fissure or abnormal opening in a part, especially when congenital.

  2. A gap or space between two adjacent teeth in the same dental arch.

The American Heritage® Stedman's Medical Dictionary
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