Definitions

1. verb

to convert a substance into ions by adding or removing electrons, typically by the application of heat, light, or an electric current.

“The high-energy radiation caused the gas to ionise, producing a bright glow.”

2. verb

to convert (a substance) into ions, typically by the application of heat, light, or an electric current.

“The process of ionising the gas allowed it to conduct electricity.”

3. verb

to cause (a substance) to lose or gain electrons, typically by the application of heat, light, or an electric current.

“The high-frequency electromagnetic waves ionised the air molecules in the atmosphere.”