English pronunciation · Words Starting with R

Radiation Pronunciation

Radiation is pronounced ray-dee-AY-shuhn, IPA /ˌreɪdiˈeɪʃən/.

ray-dee-AY-shuhn

US /ˌreɪdiˈeɪʃən/  ·  UK /ˌreɪdɪˈeɪʃən/

Syllables: ray · dee · AY · shuhn (4 syllables, stress on syllable 3)

noun: Energy sent out as waves or particles, including the harmful kind from radioactive material.

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Radiation in a Sentence

  • Background radiation varies from one valley to the next.
  • She had six weeks of radiation after the surgery.
  • Most of the radiation from the sun never reaches the ground.

Common Mispronunciations of Radiation

Not ruh-DEE-ay-shuhn

Radiation opens on a full RAY, because this family holds on to the long a of radius throughout.

Not ray-dee-A-shuhn

The third beat, AY, is the loud one, and the two in front of it run light and quick.

Tip: Radiate puts the push on RAY, and adding the ion drags it along to the AY.

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