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Meaning of gomphosis

gom•pho•sis

Pronunciation: (gom-fō'sis), [key]
— pl. -pho•ses
  1. an immovable articulation in which one bone or part is received in a cavity in another, as a tooth in its socket.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.