Definify.com
Webster 1913 Edition
Crenation
Cre-na′tion
(kr?-n?′sh?n)
, Noun.
 1. 
(Bot.) 
A rounded tooth on the edge of a leaf. 
2. 
The condition of being crenate. 
Definition 2025
crenation
crenation
English
Noun
crenation (countable and uncountable, plural crenations)
- The contraction of, or formation of abnormal notchings around, the edges of a cell after exposure to a hypertonic solution, due to the loss of water through osmosis, especially noticeable in red blood cells.
- (botany) A rounded tooth on the edge of a leaf.
- The condition of being crenate.