§ Anarion (TI:309-310) < N. Anar ’Sun’ (NAR-1) beside Anor < ANÁR- + -ion ’region’ (RC:772, 4.4)
This is the name for the region western of the Anduin, later also Anárion (WR:243-244) with a long vowel or maybe stress indication; Anórien in The Lord of the Rings.