methanolic adjective 1noun 1forms 1 adjective1 •Submersed or dissolved in, or obtained with the use of methanol.The catalyst solution (0.5M methanolic sodium methoxide) is made by dissolving dry sodium in anhydrous methanol and is stable for several months. — 1999 noun[in the plural]1 •A compound that contains methanol.The isolates tested showed the highest susceptibility to the extracts with higher phenolic compounds content, ie the methanolics. — 2014 formsmethanolics