* In [[Diastema (dentistry)]] a diastema is, a gap between 2two adjacent teeth, especially the upper [[central incisor]]s; see [[Diastema (dentistry)]]
* In [[zoology]], a diastema is a space separating teeth of different functions, especially that between [[incisor]]s and [[canine]]s and [[premolar]]s (bicuspids) and [[molar]]s in [[rodent]]s and [[ungulate]]s.<ref>http://www.oxforddictionaries.com/definition/english/diastema</ref>
* In [[pathology]], a diastema may refer to any an abnormal space, fissure, or cleft in an organ or part of the body.<ref>http://www.thefreedictionary.com/diastema</ref>
* In [[cell biology]], the diastema is the modified [[protoplasm]] at the equator of a cell, existing before [[mitosis|mitotic division]].<ref>http://dictionary.reference.com/browse/diastema</ref>
*[[Diastema (moth)|''Diastema'' (moth)]], a genus of moths in the family Noctuidae
*[[Diastema (plant)|''Diastema'' (plant)]], a flowering plant in the family [[Gesneriaceae]]
*''[[Diasporus diastema]]'', a species of frog in the family ''Leptodactylidae''