Определение crenation в Английский Язык Английский Язык словарь
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
The condition where the margins of a leaf (or leaflet) have relatively large rounded projections, but not so large as to be considered lobes Swamp White Oak is a good example of a tree with leaves that have crenate margins