decimal point
Definition of decimal point
: a period, centered dot, or in some countries a comma at the left of a proper decimal fraction (such as .678) or between the parts of a mixed number (such as 3.678) expressed by a whole number and a decimal fraction
First Known Use of decimal point
circa 1771
DECIMAL POINT Defined for English Language Learners
decimal point
Definition of decimal point for English Language Learners

mathematics : the dot (as in .678 or 3.678) that separates a whole number from tenths, hundredths, etc.
DECIMAL POINT Defined for Kids
decimal point
Definition of decimal point for Students
: the dot at the left of a decimal (as .05) or between the decimal and whole parts of a mixed number (as 3.125)
Headscratcher for decimal point
The letters in a decimal point describe what it is. They spell I'm a dot in place.
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