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Synonyms
re·duc·tion (rĭ-dŭḱshən)

[Middle English reduccion, restoration, from Old French reduction, from Latin reductiō, reductiōn-, from reductus past participle of redūcere, to bring back; see reduce.]

noun 

  1. The act or process of reducing.
  2. The result of reducing: a reduction in absenteeism.
  3. The amount by which something is lessened or diminished: a reduction of 12 percent in violent crime.
  4. Biology The first meiotic division, in which the chromosome number is reduced. Also called reduction division
  5. Chemistry
    1. A decrease in positive valence or an increase in negative valence by the gaining of electrons.
    2. A reaction in which hydrogen is combined with a compound.
    3. A reaction in which oxygen is removed from a compound.
  6. Mathematics
    1. The canceling of common factors in the numerator and denominator of a fraction.
    2. The converting of a fraction to its decimal equivalent.
    3. The converting of an expression or equation to its simplest form.

derivatives

re·dućtion·al
adjective