noun.
any terpene formed from four isopreneunits, and having twenty carbonatoms; includes vitamin A, the gibberellins, and various biologicallyactivelactones such as quassin
Word Usage
"ENGEL. D.W. and HOPPE, W. (1971) Structure of 7hydroxylathyrol, a further diterpene from Euphorbia lathyris L. Tetrahedron L.tters, (18), 1325 - 1328."