Kalmar “Acidic hydrogen” tana nufin hydrogen atom a cikin kwayoyin halitta da ke makale da zarra na lantarki (kamar oxygen, nitrogen, ko sulfur) wanda ke iya sakin hydrogen ion (H) lokacin da kwayar ta narke. a cikin ruwa ko amsa tare da tushe. Sakin H ions shine abin da ke sa maganin ya zama acidic. A wasu kalmomi, hydrogen acidic shine hydrogen atom wanda ke da alhakin abubuwan acidic na kwayoyin halitta.