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Definition of platybasia in English:

platybasia

Pronunciation /ˌplatɪˈbeɪsɪə/

noun

Medicine

  • Flattening of the base of the skull; especially a developmental or acquired abnormality in which there is invagination of the area of the skull around the foramen magnum (basilar impression).

Origin

Late 19th century; earliest use found in Journal of the Royal Anthropological Institute. From platybas- + -ia; compare basi-.