Question

what is the meaning of these definition. Useless answers will be reported.​

Answer 1

It is the definition of Element.

Element is actually pure form of Matter. Hence the above statement tells that element is the matter which produces the same material like it.

Hope you understand

Answer 2

Explanation:

एक ऐसा मामला, जो अपने विश्लेषण पर , खुद के अलावा किसी मामले का उत्पादन नहीं करता , उसे एक तत्व कहा जाता है।

hope it helps