midsagittal plane: Meaning and Definition of

mid•sag'it•tal plane'

Pronunciation: (mid-saj'i-tl), [key]
— Craniom. Craniom.
  1. a plane passing through the nasion when the skull is oriented in the Frankfurt horizontal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.