전자를 잃거나 얻어 전하를 띠게 된 원자 또는 분자.
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
예문:
"When salt dissolves in water, it separates into sodium ions and chloride ions."
"The movement of ions across cell membranes is crucial for nerve signaling."
"A positive ion, or cation, is formed when an atom loses an electron."