the GNU version of the Collaborative International Dictionary of English
adj. Cleft to the middle or slightly beyond the middle; opening with a cleft; divided by a linear sinus, with straight margins.
The Century Dictionary and Cyclopedia
Cleft or divided into two parts; forked, as the tongue of a snake; specifically, in botany, divided half-way down into two parts; opening with a cleft; divided by a linear sinus, with straight margins.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. divided into two lobes
Word Usage
"Nevoid basal cell carcinoma syndrome (NBCCS) is characterized by skeletal abnormalities, such as bifid ribs (ribs that are split into two pieces) and wedge-shaped vertebrae."