The Proto-Indo-European word *hₐwokséye/o-
Word *hₐwokséye/o-
Meaning to grow
See also Proto-Indo-European: *hₐeug- ‘to grow, to increase’
Tocharian A: okṣu ‘full-grown, aged’
Synonyms *bhel-3, bhlē-, *gʰreh₁-, *bʰeu(hₓ)-, *ĝerha-, *hₐel-, *wredh-

Comments
Mallory J.P. and Adams D. (2006)