diamagnetic substance मीनिंग इन हिंदी

• प्रतिचुंबकीय पदार्थ • प्रतिचुंबकीय प्रवृत्‍ति

diamagnetic: प्रति चुंबकीय
substance: अस्तित्व तत्त्व

And yes, since a diamagnetic substance is not a " classic " magnet, Earnshaw would not apply.