Definition of decimal system
1
: a number system that uses a notation in which each number is expressed in base 10 by using one of the first nine integers or 0 in each place and letting each place value be a power of 10
2
: a system of measurement or currency in which the basic units increase by powers of 10
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MerriamWebster unabridged
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Time Traveler for decimal system
The first known use of decimal system was in 1841
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