Definition of infinitesimal
(Entry 1 of 2)
1
: immeasurably or incalculably small
an infinitesimal difference
2
: taking on values arbitrarily close to but greater than zero
infinitesimal
nounDefinition of infinitesimal (Entry 2 of 2)
: an infinitesimal quantity or variable
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Merriam-Webster unabridged
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Time Traveler for infinitesimal
The first known use of infinitesimal was in 1706
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