ion

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a particle that is electrically charged (positive or negative);
an atom or molecule or group that has lost or gained one or more electrons (Freq. 8)
• Derivationally related forms:
ionic, ionate, ionize, ionise
• Hypernyms:
particle, subatomic particle
• Hyponyms:
anion, cation