Englishfor English speakers
variable
Noun
—
A variable is something that may not always be the same.
In life insurance, sex is an important variable because men generally die younger than women.
—
A variable is something used in mathematics for an unknown value.
In "x = 1 + 2 +...n = ((1 + n) × n)÷2", x is the variable.
—
A variable is something used in computer programming languages that stores data, such as a number or words.
variable
Adjective
—
If something is variable, it changes often.
The temperature in the area is highly variable.
—
If a group is variable, there are big differences between things in the group.
The expected height of children in 3rd grade is variable.
demand
Noun
—
Demand for something is how much people want of it.
Right now we have a supply in excess of demand for crude oil, gasoline, and heating oil.
The power companies should begin to prepare for increased demand for electricity.
Several sectors were not able to increase their production levels to satisfy the demand requirements.
Colleges have hired more part-time instructors to meet this increased educational demand.
—
A demand is what you say must be done or what you say you must have, a strong request.
His demands for new machines were ignored by the company.
—
The demands on someone or something are the difficult things that are required of them.
I can't deal with all these demands on my time.
The demands on the machines are beyond what they can produce.
demand
Verb
—
If you demand something, you say strongly that you must receive it or that it must happen.
The Lebanese Foreign Minister demanded an immediate withdrawal of Israeli forces.
People who lost their home are demanding answers about how the fire got out of control.
—
If mathx/math demands mathy/math, mathx/math needs or requires mathy/math.
The problems are real and they demand attention.