variable
Translation
variable, changeable, inconsistent, a variable (noun)
Examples
The weather is very variable at this time of year.
The weather is very variable at this time of year.
In the equation y = 2x, x is the independent variable.
In the equation y = 2x, x is the independent variable.
Grammar Patterns
a variable ((sth.)) a changeable (thing) The price is variable and depends on demand.
a variable ((in an equation)) a variable (in an equation) In this experiment, time is the key variable.
Similar Words
Adjective Synonyms: changeable, shifting; Antonyms: constant, stable. Noun Synonyms: factor, unknown.
Etymology
From Latin 'variabilis' meaning 'changeable', which comes from 'variare' meaning 'to change'.
Memory Tips
As an adjective, it's 'able' to 'vary' (change). As a noun in maths, it's a symbol (like x) whose value can vary.