di·or·tho·sis \ˌdīˌȯrˈthōsə̇s\noun (pluraldiortho·ses \-ōˌsēz\) Etymology: New Latin, from Greek diorthōsis correction, making straight, from diorthoun to correct, make straight, from dia- + orthoun to set straight, set upright, from orthos straight — more at orth- archaic: a correcting or revision especially of a text