§ Elements in Quenya and Sindarin Names The Silmarillion

ur- 'heat, be hot' in Urulóki; cf. Urimë and Urui, Quenya and Sindarin names of the eighth month of the year (The Lord of the Rings Appendix D). Related is the Quenya word aure 'sunlight, day' (cf. Fingon's cry 'before the Nirnaeth Arnoediad), Sindarin aur, which in the form Or- is prefixed to the names of the days of the week.