Meaning of subalternate

sub•al•ter•nate

Pronunciation: (sub-ôl'tur-nit, -al'-), [key]
— adj.
  1. subordinate.
  2. placed singly along an axis, but tending to become grouped oppositely.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.