[ dahy-bey-sik ]

  1. containing two replaceable or ionizable hydrogen atoms: dibasic acid.

  2. having two univalent, basic atoms, as dibasic sodium phosphate, Na2HPO4.

Origin of dibasic

First recorded in 1865–70; di-1 + basic

Other words from dibasic

  • di·ba·sic·i·ty [dahy-bey-sis-i-tee], /ˌdaɪ beɪˈsɪs ɪ ti/, noun

Words Nearby dibasic

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How to use dibasic in a sentence

British Dictionary definitions for dibasic


/ (daɪˈbeɪsɪk) /

  1. (of an acid, such as sulphuric acid, H 2 SO 4) containing two acidic hydrogen atoms: Compare diacidic

  2. (of a salt) derived by replacing two acidic hydrogen atoms: dibasic sodium phosphate, Na 2 HPO 4

Derived forms of dibasic

  • dibasicity (ˌdaɪbeɪˈsɪsɪtɪ), noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for dibasic


[ dī-bāsĭk ]

  1. Relating to an acid that contains two hydrogen atoms that can be replaced by metal ions. Sulfuric acid (H2SO4) is a dibasic acid. The hydrogens can be replaced by sodium and hydrogen to form sodium hydrogen sulfate (NaHSO4) or by two sodium atoms to form sodium sulfate (Na2SO4).

  2. Relating to a compound that contains two basic monovalent groups or atoms.

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