Definition of diastema in English:


Line breaks: dia|stema
Pronunciation: /ˌdʌɪəˈstiːmə
, dʌɪˈastɪmə/

noun (plural diastemata)

  • 1A space separating teeth of different functions, especially that between the biting teeth (incisors and canines) and grinding teeth (premolars and molars) in rodents and ungulates.
    More example sentences
    • As in the traversodonts, a large gap - the diastema - separated the incisors from the square cheek teeth (seven on each side).
    • Incisors and canines are absent, but the anterior cheek teeth are enlarged, triangular in cross section, and canine-like. They are separated from the rest of the cheek teeth by a diastema.
    • The bit sits in a part of the horse's mouth called the diastema, which is a section devoid of teeth that lies between the front incisors and the back pre-molars and molars.
  • 1.1A gap between a person’s two upper front teeth.


mid 19th century: via late Latin from Greek diastēma 'space between'.

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