1. • noun - the act of decreasing or reducing something
   • noun - any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen)
   • noun - the act of reducing complexity
2. • The act or process of reducing.
   • The result of reducing: a reduction in absenteeism.
   • The amount by which something is lessened or diminished: a reduction of 12 percent in violent crime.
   • The first meiotic division, in which the chromosome number is reduced.
   • Chemistry.
   • A decrease in positive valence or an increase in negative valence by the gaining of electrons.
   • A reaction in which hydrogen is combined with a compound.
   • A reaction in which oxygen is removed from a compound.
   • Mathematics.
   • The canceling of common factors in the numerator and denominator of a fraction.
   • The converting of a fraction to its decimal equivalent.
   • The converting of an expression or equation to its simplest form.

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