English Reference

Word

irradiation

Phoneticsir·ra·di·a·tion

/ˌɪˌɹeɪdiˈeɪʃən/

Definition

n. the process of exposing something to radiation, such as X-rays or light. It is often used to kill bacteria in food or to treat medical conditions.

n. exposure to radiation, such as ultraviolet light, X-rays, or alpha particles. Often refers to the deliberate application of ionizing radiation for sterilization or medical therapy.

Examples

“Irradiation helps keep food fresh for a longer time.”

“The hospital uses gamma irradiation to sterilize surgical equipment that cannot withstand the high heat of a traditional oven.”

“Food safety experts argue that low-dose irradiation effectively eliminates pathogens without significantly altering the nutritional profile or flavor of the produce.”

Examples

simple

“Irradiation helps keep food fresh for a longer time.”

contextual

“The hospital uses gamma irradiation to sterilize surgical equipment that cannot withstand the high heat of a traditional oven.”

complex

“Food safety experts argue that low-dose irradiation effectively eliminates pathogens without significantly altering the nutritional profile or flavor of the produce.”

Usage

Uncountable when referring to the general process; can be countable when referring to specific instances or treatments.

Real-World Examples

Common in science writing

“We are now continuing to push the scale and accuracy of such simulations, reaching higher irradiation doses at greater length scales than before.”
Phys.org · 15 Aug 2026
“The team used hot-wire laser irradiation (also called laser hot-wire welding), a process that combines a laser beam with a preheated filler wire.”
ScienceDaily · 4 Aug 2026

Etymology

From Middle French irradiacion, from Latin irradiatio. Morphologically irradiate + -ion.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C2 · Proficiency
Frequency
Occasional
Updated

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