Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A gap or space between two teeth.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A gap or space between two adjacent teeth.

Etymologies

Late Latin diastēma, interval, from Greek, from diistanai, diastē-, to separate; see diastasis.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Late Latin, from Ancient Greek διάστημα (diástēma, "interval, space between"). Compare diastasis. (Wiktionary)

Examples

  • (or "diastema" as it is called) between the four front teeth or incisors of the upper jaw and the upper canine -- which allows the lower canine to fit in front of the upper canine when the jaw is closed.

    More Science From an Easy Chair

  • 'diastema', in both jaws: in front of the eye-tooth, or between it and the outer incisor, in the upper jaw; behind the eyetooth, or between it and the front false molar, in the lower jaw.

    Lectures and Essays

  • Reptiles and amphibians include Morelet's crocodile Crocodylus moreletii (DD), the central American river turtle Dermatemys mawii (EN), Claudius angustatus, nine families of amphibian and six genera of turtles, as well as 38 species of non-poisonous and poisonous snakes including coral snake Micrurus diastema sapperi, four species of Bothrops and two sub-species of rattlesnake Crotalus.

    Tikal National Park, Guatemala

  • In Sinornithosaurus, a diastema separates the premaxillary teeth from the maxillary teeth, and the premaxillary teeth appear notably shorter than the maxillary ones (Xu & Wu 2001).

    Archive 2006-07-01

  • In such a genus as ‘Cebus’, for example (Fig. 17), it will be found that while in some secondary points, such as the projection of the canines and the diastema, the resemblance to the great ape is preserved; in other and most important respects, the dentition is extremely different.

    Essays

  • They have a pair of incisor teeth in the upper and lower jaws, separated from the molars by a large gap (diastema).

    11. Rodent pests

  • In such a genus as 'Cebus', for example (Fig. 17), it will be found that while in some secondary points, such as the projection of the canines and the diastema, the resemblance to the great ape is preserved; in other and most important respects, the dentition is extremely different.

    On the Relations of Man to the Lower Animals

  • In such a genus as 'Cebus', for example (Figure 17), it will be found that while in some secondary points, such as the projection of the canines and the diastema, the resemblance to the great ape is preserved; in other and most important respects, the dentition is extremely different.

    Lectures and Essays

  • The tooth gap (diastema) had not existed before the patient had the barbell-shaped stud inserted into her tongue.

    Emaxhealth

  • The patient provided the research team with photos that demonstrated she had no diastema, or space, prior to having her tongue pierced.

    Newswise: Latest News

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Comments

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  • A space between two front teeth; also called 'gat-toothed'. Like the nevus and lisp, it was a sign of lasciviousness and lechery.

    January 11, 2007