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mid-14c., from Old French multiplicacion (12c.) "multiplication, duplication; multiplicity, diversity," from Latin multiplicationem (nominative multiplicatio), noun of action from past participle stem of multiplicare (see multiply). Mathematical sense is attested from late 14c.
multiplication mul·ti·pli·ca·tion (mŭl'tə-plĭ-kā'shən)
The act or process of multiplying or the condition of being multiplied.
Propagation of plants and animals; procreation.