/ Dictionary / Index Y YTD: Meaning and Definition of Find definitions for: YTD Pronunciation: [key] — Accounting. Accounting. year to date. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. YT ytterbia Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language