Ion
- An atom or group of atoms that has acquired an electric charge through the loss or gain of electrons. nounWhen sodium loses an electron, it becomes a positively charged ion.Chloride ions are negatively charged and are essential for maintaining fluid balance in the body.
- A charged particle formed when an atom or molecule gains or loses one or more electrons. nounIons are crucial in the conduction of electricity in solutions.The battery generates electricity through the movement of ions between its electrodes.