"the sun," c.1450, from L.
sol "the sun," from PIE
*s(e)wol-, from base
*saewel- "to shine, the sun" (cf. Skt.
suryah, Avestan
hvar "sun, light, heavens;" Gk.
helios; Lith.
saule; O.C.S.
slunice; Goth.
sauil, O.E.
sol "sun,"
swegl "sky, heavens, the sun;" Welsh
haul, O.Cornish
heuul, Breton
heol "sun;" O.Ir.
suil "eye"). The PIE element
-*el- in the root originally was a suffix and had an alternate form
-*en-, yielding
*s(u)wen-, source of Eng.
sun (q.v.).