segmentation
http://purl.obolibrary.org/obo/GO_0035282
The regionalization process that divides an organism or part of an organism into a series of semi-repetitive parts, or segments, often arranged along a longitudinal axis. [ http://www.ncbi.nlm.nih.gov/pubmed/10611687 http://www.ncbi.nlm.nih.gov/pubmed/9706689 ]