Definitions for "Conjugate base"
Keywords:  proton, nsted, lost, acceptor, acid
the species left after an acid gives up a proton
When a acid, AH, reacts with a proton acceptor, B, the product A- is said to be the conjugate base of AH.
the particle remaining after an acid has lost a proton; in the example above, OH − is the conjugate base of the acid H2O.