carotenoid biosynthetic process
http://purl.obolibrary.org/obo/GO_0016117
The chemical reactions and pathways resulting in the formation of carotenoids, tetraterpenoid compounds in which two units of 4 isoprenoid residues joined head-to-tail are themselves joined tail-to-tail. [ GOC:go_curators ]
Synonyms: carotenoid synthesis, carotenoid biosynthesis, carotenoid formation, carotenoid anabolism