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    decimal

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    decimal
    I
    dec‧i‧mal1 /ˈdesəməl, ˈdesɪməl/ noun [countable]
    a fraction (=a number less than 1) that is shown as a full stop followed by the number of tenths, hundredths etc. The numbers 0.5, 0.175, and 0.661 are decimals.

    II
    decimal2 adjective
     Date: 1600-1700
     Language: Modern Latin
     Origin: decimalis, from Latin decem 'ten'
    a decimal system is based on the number 10:
        changing to a decimal system
        calculations accurate to three decimal places (=one of the numbers after the full stop in a decimal)