(biochemistry) A zinc enzyme, widely distributed in mammalian tissues, that catalyzes the release of the N-terminal residue from a tripeptide.

(organic chemistry) The triterpene 2,3,6,7,8,8a.alpha.-hexahydro-1.beta.,4,9,9-tetramethyl-1H-3a,7-methanoazulene found in patchouli

plural of puzzlehead

(Yorkshire) full; replete