/ Dictionary / Index D dibasic: Meaning and Definition of Find definitions for: di•ba•sic Pronunciation: (dī-bā'sik), [key] — adj. Chem. containing two replaceable or ionizable hydrogen atoms: dibasic acid. having two univalent, basic atoms, as dibasic sodium phosphate, NaHPO. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Dibai dibasic potassium phosphate Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language