The Proto-Indo-European word *dye(u)-
Word *dye(u)-
Meaning day
See also Proto-Indo-European: *deiwós ‘god’
Proto-Indo-European: *dei- ‘to shine, to be bright’
Synonyms *deino-, *hₐéĝhr̥, *h₂ehₓmer-

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