/ Dictionary / Index T triacontanol: Meaning and Definition of Find definitions for: tri•a•con•ta•nol Pronunciation: (trī"u-kon'tu-nôl", -nol"), [key] — n. Biochem. a long-chain alcohol, CH(CH)CHOH, occurring in plant waxes and beeswax, that is a plant growth regulator. Also called melissyl alcohol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triacid triad Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language