biochem,n.colloq.|baɪəˈkɛm| [Abbrev.] = biochemistry n. 1968J. Hudson Case of Need i. 10 A beautiful and efficient girl with a Ph.D. in biochem from Stanford.1986Benford & Brin Heart of Comet (1987) i. 35 My biochem might screw up in some way the experts missed out on.