When a compound donates (loses) electrons (hydrogen ion), that compound becomes such a compound is often referred to as an electron donor.

Oxidized

Explanation:

Compounds that lose or donate electrons are also called electron donors. They act as reducing agents in chemical reactions where they reduce the oxidation states of compounds they react with and they become oxidized themselves.

For example; in the reaction between Hydrogen gas and oxygen to form water

2H+ + O2- > H20

Two hydrogen atoms donate their electrons to an oxygen atom, reducing the oxidation state of oxygen to 2- and oxidized itself to +1