crenation

noun

cre·​na·​tion kri-ˈnā-shən 

1

a

: a crenate formation

especially : one of the rounded projections on an edge (as of a coin)

b

: the quality or state of being crenate

2

: shrinkage of red blood cells resulting in crenate margins

Word History

Etymology

cren(ate) + -ation

First Known Use

1846, in the meaning defined at sense 1a

Medical Definition

crenation

noun

cre·​na·​tion kri-ˈnā-shən 

: shrinkage of red blood cells resulting in crenated margins