English Explanatory Dictionary

ultraviolet

English dictionary entry

Meanings

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

Pronunciation

/ˌʌltɹəˈvaɪələt/ /ˌʌltɹəˈvaɪlət/ LL-Q1860 (eng)-Vealhurl-ultraviolet.wav

Word forms

ultraviolet more ultraviolet most ultraviolet ultraviolets

Etymology

Etymology tree Proto-Indo-European *h₂el- Latin ūls Proto-Indo-European *-teros? Latin -ter Old Latin -ād Latin -ā Latin ultrālbor. English ultra- Latin viola Old French -ette Old French violettebor. Middle English violet English violet English ultraviolet From ultra- (“beyond”) + violet (“violet”).

Antonyms

infrared

Related words

ultraviolet radiation

Derived words

extreme ultraviolet ultraviolet A ultraviolet astronomy ultraviolet B ultraviolet C ultraviolet catastrophe ultraviolet light
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