Medical Definition of segmentation
1: the act or process of dividing into segments; especially : the formation of many cells from a single cell (as in a developing egg)
2: annular contraction of smooth muscle (as of the intestine) that seems to cut the part affected into segments—compare peristalsis
Seen and Heard
What made you want to look up segmentation? Please tell us where you read or heard it (including the quote, if possible).