/ Dictionary / Index A anatto: Meaning and Definition of Find definitions for: a•nat•to Pronunciation: (u-nat'ō, ä-nä'tō), [key] — pl. -tos. annatto. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. anatta Anax Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language