ion-n; 1 Senses

Sense Number 1: an electrically charged atom or molecule

Commentary: ION[+entity][+natural][+atom][+charged][+electrically]

Ions in the atmosphere contribute to the effect called the 'northern lights'.
How fast is an ion of deuterium moving if it is in a plasma with a temperature of 108 K?

WordNet 3.0 Sense Numbers: 1