Skip to the word

Added 9 October 2026

ultraviolet

/ˌʌltɹəˈvaɪələt/ adjective

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about ultraviolet at Wordnik → Where our words come from →

Of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 to 10 nanometres.
Relating to very high energies or very small distances or time spans.

noun

Ultraviolet colour.

Origin

From ultra- (“beyond”) + violet (“violet”).

From Wiktionary, via Kaikki.org (CC BY-SA)

Back to today's word