​NICANOR, Greek grammarian, son of Hermeias of Alexandria (or Hierapolis), lived during the reign of Hadrian. He chiefly devoted himself to the study of punctuation and the difference of meaning caused by it. Hence he was nicknamed “the Punctuator” (ὁ ςτιγματίας). He is known to have written on the punctuation of Homer and Callimachus. He was possibly the author of a work Περὶ Μετονομασιῶν (On the Change of Names of Places), of which some fragments are preserved in C. W. Müller, Fragmenta Historicorum Graecorum, iii. 632.