Proto-IE: *yak(')- (Gr *h-)
Meaning: healthy; medical treatment, medicine
Old Greek: ákos n. `Heilung, Heilmittel', akéomai̯ `heilen, ausbessern', akestḗr `sänftigend'
Celtic: *i̯akk-: OIr hīcc `Heilung, Zahlung'; Cymr iach `gesund', Corn yagh `gesund', Bret iac'h `gesund'
Russ. meaning: здоровый; лечение, лекарство
