(ˈ)dī+ adjective
Etymology: di- + basic
1. : having two hydrogen atoms capable of replacement by basic atoms or radicals — used of acids (as oxalic or sulfuric acid)
2. : containing two atoms of a univalent metal or their equivalent
dibasic sodium phosphate Na 2 HPO 4
3. : having two basic hydroxyl groups : able to react with two molecules of a monobasic acid — used of bases and basic salts
• di·basicity (|)dī+ noun -es