Sindarin 

rodyn

noun. alternate name of the last day of the Eldarin six-day week

Sindarin [LotR/1110; PM/138] Group: Eldamo. Published by

rodon

noun. Vala

A Sindarin term for the Vala (PE17/33), appearing in its plural form S. Rodyn as one of the days of the week (LotR/1110) and also in the Sindarin name for Valinor: Dor-Rodyn (MR/200). It is derived from the prefixal form rod- of raud “noble” (PE17/118, 186). Its final element might be the augmentative suffix -on, perhaps literally meaning “✱Most Noble”. It could also be the agental suffix -on, as suggested by David Salo (GS/283), but that suffix is usually masculine (WJ/400), whereas Rodon seems to apply to all Valar.

Sindarin [MR/200; PE17/033; PE17/118; PE17/186] Group: Eldamo. Published by

rodon

vala

(pl. Rodyn, coll. pl. Rodonnath)

balan

noun. Vala, Vala, [N.] Power, God

At one point (Let/427), Tolkien stated that the plural form Belain (and presumably its singular Balan) did not exist in Sindarin and its derivative Orbelain “Vala-day” was a phonetic translation of Q. Valanya. Elsewhere, though, Balan is well attested as a Sindarin word.

Sindarin [Let/427; PE17/048; SA/val] Group: Eldamo. Published by

balan

vala

(i Valan), pl. Belain (i Melain). In ”Noldorin”, the pl. form used with the article was "iMbelain" (LR:365 s.v. KIRIK).