αὐτενιαυτός
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
όν,
A of the year, this year's, γένη BGU1120.34 (i B. C.), al.; κόπρος Gp.2.21.10; οἶνος Orib.Fr.142: neut. as Adv., Epigr. in Supp.Epigr.2.431.