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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.

The study examined additive manufacturing using hot-wire laser irradiation and tested two different fabrication strategies.

From Science Daily • Mar. 13, 2026

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

From Science Daily • Mar. 13, 2026

In addition to demonstrating how electron irradiation drives polymerization and restructuring, the experiment revealed TEM's potential for studying controlled reactions in other organic molecules as well.

From Science Daily • Oct. 29, 2025

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

First direct irradiation of a patient, November 20, 1939.

From "Big Science" by Michael Hiltzik