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inference
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infinitesimal

in·fin·i·tes·i·mal [ ìnfini téssəm'l ]


adjective 
Definition:
 
1. tiny: very small in number, amount, or degree

2. mathematics close to zero: able to assume values arbitrarily close to but greater than zero



noun  (plural in·fin·i·tes·i·mals)
Definition:
 
infinitesimal number: an infinitesimal number or function

[Mid-17th century. < modern Latin infinitesimus "the number in a series corresponding to infinity" < Latin infinitus (see infinite)]

in·fin·i·tes·i·mal·ly adverb
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