MOIETY Meaning of MOIETY in English n. (pl. -ies) Law or literary 1 a half. 2 each of the two parts into which a thing is divided. [ ME f. OF moité, moitié f. L medietas -tatis middle f. medius (adj.) middle ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012