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Meaning of preaxial

pre•ax•i•al

Pronunciation: (prē-ak'sē-ul), [key]
— adj. Anat., Zool.
  1. situated before the body axis; pertaining to the radial side of the upper limb and the tibial side of the lower limb.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.