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Definitions

irradiation

[ih-rey-dee-ey-shuhn] / ɪˌreɪ diˈeɪ ʃən /
NOUN
edification
Synonyms
STRONG
betterment elevation elucidation enhancement enlightenment guidance illumination information instruction knowledge learning nurture schooling teaching tuition uplifting
Antonyms
STRONG
ignorance
WEAK
destruction worsening
NOUN
light
Synonyms
STRONGEST
bulb candle daylight flash glare glow lamp lantern radiation ray star sun sunshine window
STRONG
aurora beacon blaze brightness brilliance brilliancy coruscation dawn daybreak daytime effulgence emanation flare gleam glimmer glint glitter illumination incandescence lambency lighthouse luminosity luster morn morning phosphorescence radiance refulgence scintillation sheen shine sparkle splendor sunbeam sunrise taper torch
WEAK
fulgor
Antonyms
STRONG
darkness dimness dullness eventide sundown sunset
WEAK
dark night obscurity
NOUN
ray
Synonyms
STRONGEST
glimmer light radiation
STRONG
bar blaze blink emanation flash flicker gleam glint glitter hint incandescence moonbeam patch pencil radiance scintilla shaft shine spark sparkle streak stream sunbeam trace wave
Antonyms
STRONG
dullness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Their work also incorporates a technique called hot-wire laser irradiation.

From Science Daily • Mar. 13, 2026

Another possibility was that the aurora was due to resonant scattering of nitrogen molecular ions caused by sunlight irradiation.

From Science Daily • Dec. 5, 2024

This study is the first to show that such plasma irradiation can accelerate tendon repair.

From Science Daily • May 21, 2024

Moreover, the Illinois group performed the first calculations involving high-temperature graphene, and the Duisburg-Essen group experimentally verified the predictions by irradiation.

From Science Daily • May 17, 2024

In fact, neutron irradiation of live tumors was more Ernest’s enthusiasm than John’s.

From "Big Science" by Michael Hiltzik

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.