[Meaning] to speak from memory.
Also [sc. attested is the phrase] a)po\ sto/matos ["by mouth, orally"], [meaning] without documents. "But he commanded them to speak orally to the leaders of the Mardians."[1]
Also [sc. attested is] a)po\ sto/matos, [meaning] as we [say] not by means of documents, but from memory. Philemon in Dispensations [writes]: "if you wish, I will say everything orally."[2] Cratinus [uses] this the same as a)po\ glw/tths ["from the tongue"] in Laws: "but, by Zeus, I neither know my letters nor have experience [using them], but I will tell you the rest orally; for I remember well."[3] Thucydides in [book] 7 [writes]: "and those from Nicias came into Athens and they reported orally as many things as he told them."[4] Plato in Theaetetus [writes]: "but what indeed are words? Can you explain? -- No, by Zeus, at least, not orally, but I wrote down notes right away when I came home."[5]
Also, they say that a teacher a)postomati/zei ["dictates"], whenever he tells the boy certain things orally.