infinitesimal - Dictionary definition and pronunciation - Yahoo! Education
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Definition of infinitesimal

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in·fin·i·tes·i·mal  audio  (nfn--ts-ml) KEY 

ADJECTIVE:
  1. Immeasurably or incalculably minute.
  2. Mathematics Capable of having values approaching zero as a limit.
NOUN:
  1. An immeasurably or incalculably minute amount or quantity.
  2. Mathematics A function or variable continuously approaching zero as a limit.
ETYMOLOGY:
From New Latin nfntsimus, infinite in rank, from Latin nfntus, infinite ; see infinite

OTHER FORMS:
infin·i·tesi·mal·ly(Adverb)


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