noun Date: 1660 a fraction (as .25 = 25/100 or .025 = 25/1000) or mixed number (as 3.025 = 3 25/1000) in which the denominator is a power of 10 usually expressed by use of the decimal point
DECIMAL FRACTION
Meaning of DECIMAL FRACTION in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012