An early Qenya word for the Sun appearing in a word list from the 1920s (PE15/77). Its etymology is obscure.
Early Quenya
auro
noun. sun
ahúra
noun. Sun
sári
proper name. Sun
A name for the Sun in the earliest Lost Tales (LT1/186), probably a derivative of the root ᴱ√SAH(Y)A “be hot” as suggested by Christopher Tolkien (LT1A/Sári).
A noun appearing in Early Noldorin Word-lists as {ūru >>} auro, cognate of ᴱN. úr “sun”, and derived from {✶ourǝ >>} ✶ourū̆ (PE13/155). Elsewhere Q. Úr(in) was a name for the Sun from the 1910s up through the 1950s, but Tolkien eventually changed this to Vása (MR/198).