real number (B2)
noun
Pronunciation: /ˌriːəl ˈnʌmbər/
Definition
A value that represents a quantity along a continuous line, including all rational numbers (like fractions and integers) and irrational numbers (like pi or the square root of 2).
Examples
The set of real numbers includes all positive and negative whole numbers, fractions, and decimals.
Mathematicians use the symbol 'ℝ' to represent the set of all real numbers.
The length of the diagonal of a square with side length 1 is the real number √2.
How to Use real number
- set of real numbers (collocation)
- The collection of all real numbers. — "The set of real numbers is uncountable."
- real number line (collocation)
- A visual representation of all real numbers. — "Every point on the real number line corresponds to a unique real number."
Synonyms of real number
Words with a similar meaning to real number:
Antonyms of real number
Words with the opposite meaning to real number:
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