Englishfor English speakers
variable
Noun
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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.
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A variable is something used in mathematics for an unknown value.
In "x = 1 + 2 +...n = ((1 + n) × n)÷2", x is the variable.
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A variable is something used in computer programming languages that stores data, such as a number or words.
variable
Adjective
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If something is variable, it changes often.
The temperature in the area is highly variable.
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If a group is variable, there are big differences between things in the group.
The expected height of children in 3rd grade is variable.
length
Noun
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The length of an object is the distance between one end of that object and the other.
What is the length of the car?
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The length of a horse is used to show the distance between horses at the end of a race.
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Length is the distance down the pitch that the ball bounces on its way to the batsman.
record
Noun
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A record is something in writing to tell what happened.
Keep a record of the date and what you said every time you talk to that person.
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A record is a big round black plastic thing with music or other sounds on it.
Now people don't use records any more -- they use cassettes or CDs.
record
Verb
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To make a written record about something.
She recorded everything she did in a little book.
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To put music or other sounds onto a machine.
The singer recorded some songs on CDs to sell them.