Definition, Meaning & Synonyms
x
Letter (alphabet) / Variable (mathematics)
/ɛks/
Definition
The 24th letter of the English alphabet, often used to denote an unknown quantity in mathematics.
Examples
- In algebra, we often solve for ‘x’ in equations.
- The variable ‘x’ can take on different values.
- In geometry, ‘x’ often represents a horizontal coordinate.
Meaning
In various contexts, ‘x’ can represent a variable or an unknown quantity, as well as being used in algebraic expressions and equations.
Synonyms
- Unknown
- Variable
- Placeholder