Meaning of extralateral

ex•tra•lat•er•al

Pronunciation: (ek"stru-lat'ur-ul), [key]
— adj.
  1. of or pertaining to the right of a mine owner to the vein or lode of an ore when it extends under an adjacent mining property.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.