An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

The spontaneous disintegration of certain atomic nuclei, which is accompanied by the emission of either α- or β- particles and/or a γ rays.

→ radio; → activity.

The opposition to the flow of alternating current caused by the inductance and capacitance in a circuit rather than by resistance.

From → react + -ance a suffix of nouns.

Vâžirâyi state noun of vâžirâ agent noun of vâžiridan→ react.

1) General: A person or thing that reacts.
2) A substance on the left side of a → chemical equation.

From → react + -ant.