The son of Aragorn and Arwen (LotR/1062). His name is a compound Eldar “Elves” and the patronymic suffix -ion “-son”.
Quenya
elda
noun. Elf, (lit.) one of the Star-folk
eldarion
masculine name. *Son of the Eldar
eldarin
noun/adjective. of the Eldar; Elvish (language)
@@@ Helge Fauskanger suggested that Eldarinwa is an extended form of this word as an adjective (QQ/Eldarin). More exactly, I think it is the application of the possessive/adjectival suffix -va to the word Eldarin in its noun-sense = “Elvish language”.
eldar ataformaiti
the Elves were ambidexters
First phrase @@@
| |  I  | II |III|IV|  V  |VI|VII| |i Eldar| |i·Eldar|Eldar| |{nār >> nā >>}|nāner|...| |{nár}| | |{tatafor... >>}|attaformor|ataformor|{attaformaite >>} ataformaite|{ataformaite >>} ataformaiti|
eldar nilir eleni
(the) Elves love (the) stars
eldar oronter
the Elves arose
eldar sindar
Grey Elves
eldar sindaron
Grey Elves’
ar súlë manwëo etsurinyë ar eldaron indor turyaner
*and the spirit of Manwe went out and the hearts of the Eldar were comforted / or obeyed
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
oromë valaron minya omennë ye eldar
Orome first of (the) Valar met the Elves
sindar eldar
Grey Elves
sindar eldaron
Grey Elves’
sindar i eldar malariando
Grey are the Elves of Beleriand
Elda-lambë
the language of the eldar
Elda-lambë noun "the language of the Eldar" (WJ:368)
Oromë
the eldar now take the name to singify 'horn-blowing' or 'horn-blower', but to the valar it had no such meaning
Oromë noun name of a Vala, adopted and adapted from Valarin. Observes Pengolodh, "the Eldar now take the name to singify 'horn-blowing' or 'horn-blower', but to the Valar it had no such meaning" (WJ:400-401, cf. SA:rom and ROM, TÁWAR in Etym, VT14:5). Genitive Oromëo and possessive Oroméva in WJ:368. _._Loose compound Oromë róma "an Oromë horn", sc. "one of Orome's horns (if he had more than one)" (WJ:368). A deleted entry in the Etymologies cited the name as Orómë with a long middle vowel (VT45:15). Oromendil, masc. name *"Friend of Oromë" (UT:210)
eldalondë
place name. Haven of the Eldar
eldavehtë
proper name. a habitation, haunt or place occupied by Eldar
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.
eldalië
noun. People of the Elves, Elven-folk, People of the Eldar, Elven-folk, [ᴹQ.] Elf-folk
aiya eldalië ar atanatári, utúlie’n aurë
Behold, people of the Eldar and Fathers of Men, the day has come!
elda-lambë
proper name. Language of the Eldar
i arani eldaive
The kings of the Eldar
lambe eldaiva
the language of the Eldar
The most common Quenya word for “Elf”. Its literal meaning is “one of the Star-folk” (WJ/374), a name given to them by Oromë (S/49) and derived from the same primitive root √EL as Q. elen “star”. Strictly speaking, this term excludes the Avari who chose not to journey to Valinor, so that the proper term for all of Elvenkind is Q. Quendë “one of the Elven race”. The Elves of the West rarely encountered the Avari, however, so that term Elda was ordinarily broad enough to describe all Elves.
Conceptual Development: This word dates back to the earliest stages of Tolkien’s languages. At its first appearance, ᴱQ. Elda was glossed “a beach-fay” (QL/35), but was soon extended to describe all Elves (LT1/113). In Tolkien’s earliest writings the word was not given a clear etymology. In the Lhammas “Account of Tongues” from the 1930s (LR/168-180), Tolkien gave ᴹQ. Elda the sense of “one who departed” (LR/169), as opposed to the ᴹQ. Lembi “Lingerers” who remained behind (precursors of the Avari). With this sense, Elda was derived from ᴹ√LED “go, fare, travel” (Ety/LED).
Tolkien soon revised the etymology of Elda so that it was derived instead from ᴹ√ELED “star-folk” (Ety/ELED). In some later writings, he considered both etymologies of this word to be valid, so that Elda was blending of both “star-folk” (from √EL) and Q. Eldo “marcher” (from √LED or √DEL), as discussed in the Quendi and Eldar essay from 1959-60 and elsewhere (WJ/362-3, PE17/139). However, the sense “star-folk” is probably better known.
In some notes from 1957, Tolkien considered deriving this word from a variant root √DEL “fair” so that its meaning would be “the fair” (PE17/151), but this seems to have been a transient idea.