krēˈnāshən, -reˈ-, -rə̇ˈ- noun
( -s )
Etymology: crenate + -ion
1.
a. : one of a series of rounded projections forming an edge (as of a leaf or a coin)
b. : the quality or state of being crenate
2. : shrinkage or the shrunken condition of red blood cells exposed to hypertonic solutions in which the cell margins become crenate