Question

oxidation meaning ?????????.?.?.?..?..?.?​

Answer 1

A reaction in which the atoms of an element lose electrons and the oxidation state of the element increases

Answer 2

Oxidation reaction is a reaction that involves gain of oxygen or a loss of hydrogen. When a substance gains oxygen or loses hydrogen during  a reaction, it is oxidized.

$\:\:\:2Cu \:\:\:\:\:\:\:\:\:+ \:\:\:\:\:\:\:\:\:O_{2} \:\:\:\:\:\:\:\:\: \to \:\:\:\:\:\:\:\:\: 2CuO\\Copper \:\:\:\:\:\:\:\:\: \:\:\:\:\:\:\:Oxygen \:\:\:\:\:\:\:\:\: \:\:\:\:Copper \:Oxide$