Ma'anar ƙamus na kalmar "allograph" wani nau'i ne na grapheme (nau'in tsarin rubutu, kamar harafi ko alama) wanda ke wakiltar sauti ɗaya ko ma'anar kamar wani grapheme a cikin tsarin rubutu iri ɗaya. A mafi sauƙi, yana nufin hanyoyi daban-daban na rubuta sauti iri ɗaya ko
