Kalmar "milliequivalent" (wanda aka fi sani da "mEq") yana nufin ma'aunin ma'auni da ake amfani da shi a cikin ilmin sunadarai da magani don bayyana yawan ions ko kwayoyin halitta a cikin mafita. millievalent daya daidai yake da dubu daya (1/1000) na daidai, wanda aka siffanta shi da adadin wani abu da zai iya hade da ko maye gurbin takamaiman adadin hydrogen ions (ko wasu ions) a cikin wani sinadari. p>A zahiri, ana amfani da milliequivalents sau da yawa don bayyana yawan adadin electrolytes (kamar sodium, potassium, da chloride) a cikin jini da sauran ruwan jiki. Misali, maganin da ke dauke da miliyon 1 na sodium a kowace lita zai ƙunshi isassun ions sodium don haɗawa da 1/1000 na daidai da ions hydrogen.