/ Dictionary / Index S secondo: Meaning and Definition of Find definitions for: se•con•do Pronunciation: (si-kon'dō, -kōn'-It.se-kôn'dô), [key] — pl. -di the second or lower part in a duet, esp. in a piano duet. the performer playing this part. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: secondo (Thesaurus) second nature second of arc Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language