An ion with a negative charge, typically involved in chemical reactions and known for its health benefits.

नकारात्मक आयन

English Usage: "Negative ions are believed to purify the air by reducing pollutants."

Hindi Usage: "नकारात्मक आयन यह माना जाता है कि वे प्रदूषकों को कम करके हवा को शुद्ध करते हैं।"