intransitive verb.
To combine with oxygen; make into an oxide.
intransitive verb.
To increase the positive charge or valence of (an element) by removing electrons.
intransitive verb.
To coat with oxide.
intransitive verb.
To become oxidized.
The Century Dictionary and Cyclopedia
To cause to combine with oxygen; effect oxidation of.
To take up oxygen; combine with oxygen.
the GNU version of the Collaborative International Dictionary of English
transitive verb.
To combine with oxygen or with more oxygen; to add oxygen to.
transitive verb.
To remove hydrogen from (anything), as by the action of oxygen.
transitive verb.
To subject to the action of oxygen or of an oxidizing agent, so as to bring to a higher grade, as an -ous compound to an -ic compound.