: the replacement or realignment of a body part in normal position or restoration of a bodily condition to normal
: the process of reducing by chemical or electrochemical means
: the psychological diminishment of emotion or needs through activity or adjustment
:meiosis; specifically: production of the gametic chromosome number in the first meiotic division
Any of a class of chemical reactions in which the number of electrons associated with an atom or group of atoms is increased. The electrons taken up by the substance reduced are supplied by another substance, often hydrogen (H), which is thereby oxidized. See also oxidation-reduction.