ionization

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge)
noun the process of ionizing; the formation of ions by separating atoms or molecules or radicals or by adding or subtracting electrons from atoms by strong electric fields in a gas

From ionize + -ation.

I prevent such interchange, however, by maintaining an anti-electrolysis which retards ionization and thus builds up what might be called osmotic potential. — Astounding Stories of Super-Science January 1930, Unknown
Only a strange jumbled ionization appeared this time, then a slow, rising blue flame began to creep up, and burn hot and blue. — The Ultimate Weapon, John W., Jr. (John Wood) Campbell
The temperature and humidity were optimized; the electricity content of air was neutralized both electrostatically and by nuclear ionization, and the air cycled and purified once an hour. — Terminal Compromise, Winn Schwartau

ionisation

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