-on gen.pl. ending (3O), in aldaron, aranion, elenion, Eldaron, #esseron, Ingweron, Istarion, Númevalion, Quendion, Silmarillion, Sindaron, tasarion (see Nan-Tasarion), Valion, wenderon, yénion. Normally the ending -on is added to the nominative plural, whether it ends in -i or -r, but some nouns in -ë that would have nominative plurals in -i seem to prefer the ending -ron in the genitive (hence #esseron as the gen. pl. of essë "name", though the nominative pl. is attested as essi and we might have expected the gen. pl. *ession; similarly wenderon, Ingweron).
Quenya
elda
of the stars
mana i coimas eldaron?
What is the ‘coimas’ of the Eldar?
mana i·coimas in·eldaron?
What is the ‘coimas’ of the Eldar?
i arani eldaron
The kings of the Eldar
lambe eldaron
the language of the Eldar
sindar eldaron
Grey Elves’
-on
name
coimas
life-bread
coimas noun "life-bread" = Sindarin lembas(SA:cuivië, PM:395); coimas Eldaron "the coimas of the Eldar" (PM:395)
in
the coimas [lembas] of the eldar
in article, apparently a variant of the definite article i, observed in the phrase i-coimas in-Eldaron "the coimas [lembas] of the Eldar" in PM:403. It looks like the Sindarin plural article, but in Quenya i normally covers both sg. and pl. "the", and the word Eldar does not need any article at all. The alternative reading i-coimas Eldaron (PM:395) is probably to be preferred.
mana
what is
mana interogative, a word translated "what is" in the sentence mana i-coimas Eldaron[?] "what is the coimas (lembas) of the Eldar?" (PM:395, a variant reading in PM:403) Either this is *ma "what" + ná "is", or mana may itself be a unitary word "what", and there is not really any word meaning "is" in the sentence. Since ma is assigned other meanings elsewhere, the latter interpretation may be the more likely.
eldanyárë
proper name. History of the Elves
eldar sindaron
Grey Elves’
elena
of the stars
elena adj. "of the stars" (SA:êl, elen); also elenya
esse
noun. name
essë
name
essë (1) noun "name", also later name of Tengwa #31, originally (MET) called árë (ázë). (Appendix E). With a pronominal ending esselya "thy name" (VT43:14). Pl. #essi in PM:339 and MR:470, gen.pl. #esseron "of names" in the compound Nómesseron (q.v.); we would rather have expected *ession, given the nom.pl. essi; perhaps #esser is a valid alternative plural form. Essecarmë noun "name-making" (MR:214, 470), Eldarin ceremony where the father announces the name of his child. Essecenta *("k") noun "Name-essay" (see centa) (MR:415); Essecilmë noun "name-choosing", an Eldarin ceremony where a child named him- or herself according to personal lámatyávë (q.v.) (MR:214, 471). The meaning Tolkien originally assigned to the word essë** in the Etymologies was "place" rather than "name" (VT45:12).
essë
noun. name
esta-
verb. name
i arani eldaive
The kings of the Eldar
lambe eldaiva
the language of the Eldar
sanda
name
[sanda, sandë] (þ) (2) noun "name" (VT46:16)
sanya
name
[sanya] (þ) (2) noun ?"name" (reading of gloss uncertain, VT46:16)
elda 1. originally adj. "of the stars", but wholly replaced (WJ:362) by: 2. noun (Elda) = one of the people of the Stars, (high-)elf, an Elf (SA:êl, elen, Letters:281, ELED, ÉLED; notice that Tolkien abandoned a former etymology with "depart"), chiefly in the pl. Eldar (WJ:362, cf. GAT(H), TELES).The primitive form Tolkien variously cited as ¤eledā / elenā(Letters:281, PE17:152) and ¤eldā(WJ:360). Partitive pl. Eldali (VT49:8), gen. pl. Eldaron (WJ:368, PM:395, 402);dative pl.eldain "for elves", for Eldar (FS); possessive sg. Eldava "Elf's" (WJ:407); possessive pl. Eldaiva (WJ:368), Eldaivë governing a plural word (WJ:369). The word Eldar properly refers to the non-Avari Elves only, but since Eldar rarely had any contact with the Avari, it could be used for "elves" in general (in LT1:251, Elda is simply glossed "Elf"). See also Eldo. The plural form Eldar should not require any article when the reference is to the entire people; i Eldar refers to a limited group, "(all) the Elves previously named"; nevertheless, Tolkien in some sources does use the article even where the reference seems to be generic (i Eldar or i-Eldar, VT49:8).