Radiation — Meaning, Definition & Synonyms

noun /ˌrā-dē-ˈā-shən/ ra·di·a·tion

Meaning & Definition of Radiation

Radiation (noun)

  1. the action or process of radiating
  2. the process of emitting radiant energy in the form of waves or particles
  3. the combined processes of emission, transmission, and absorption of radiant energy

Word Forms of Radiation

Derived words: radiational (adjective), radiationless (adjective), radiative (adjective)

Origin & Etymology of Radiation

First known use: 15th century

Vocabulary Lists & Topics for Radiation

Words & Phrases Containing Radiation

radiation sickness, radiation therapy, adaptive radiation, anti-radiation, background radiation, Cerenkov radiation, cosmic background radiation, electromagnetic radiation, gamma radiation

Frequently Asked Questions about Radiation

What does "Radiation" mean?

"Radiation" means the action or process of radiating. As a noun, it is defined as: the action or process of radiating. It has 3 distinct senses.

Is "Radiation" a noun, verb, or adjective?

"Radiation" is a noun.

Is "Radiation" useful for IELTS, TOEFL, and other English exams?

As a B2-level word, "Radiation" is typical of Cambridge B2 First (FCE), IELTS band 5.5–6.5, TOEFL iBT 72–94, PTE Academic 59–75, TOEIC Listening & Reading 785+.

How do you pronounce "Radiation"?

"Radiation" is pronounced /ˌrā-dē-ˈā-shən/ and divided into syllables as ra·di·a·tion.

What is the origin of the word "Radiation"?

First known use: 15th century.

What CEFR level is "Radiation"?

"Radiation" is a B2-level word in SophDict's CEFR vocabulary lists, which group English words from A1 (beginner) to C2 (proficient).

What topics is "Radiation" used in?

"Radiation" is commonly used in topics such as Science & Research.

What words are derived from "Radiation"?

Words derived from "Radiation" include radiational (adjective), radiationless (adjective) and radiative (adjective).