Meaning & use
decimal expansion
The representation of a number as a sequence of digits following a decimal point.
See it in a sentence
The decimal expansion of one-third repeats endlessly as the digits 0.333.
Students learned to find the decimal expansion of common fractions by long division.
A note on using this word
A decimal expansion can terminate, like 0.5, or repeat forever, like 0.333, depending on the number involved.
Words with a similar meaning
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