Pronunciation: (kri-nā'shun), [key]
1. a rounded projection or tooth, as on the margin of a leaf.
2. Anat.(in erythrocytes) the state of being or becoming shrunken with a notched or indented edge.
3. a notch between teeth.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.