adj. Having only one principal or specialized surface or edge.
adj. Cylindrical.
the GNU version of the Collaborative International Dictionary of English
adj. Having but one front surface.
The Century Dictionary and Cyclopedia
Having only one face, front, or aspect; all facing the same way, as the polypites of some corals; unifarious; secund. See cut under sen-kidney.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. having but one principal or specialized surface
Word Usage
"A team led by Michael R. Waters of Texas A&M University used thermoluminescence dating to estimate the ages of layers above and below one containing stone flakes and a few rocks resembling simple tools known as unifacial choppers."