πρόσοιδα
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, 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)
pf. without pres. in use (cf. Εἴδω), prop.
A know besides: only in phrase χάριν προσειδέναι be grateful besides, Pl.Ap.20a; χάριν προσείσομαι Ar.V.1420.
