Englishfor English speakers
constant
Adjective
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If something is constant, it doesn't change over time.
I have this constant pain in my back. I wish it would stop.
The rain has been constant all morning.
constant
Noun
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A constant is a value that doesn't change.
In the formula math7x^2+3y+5=z/math, 5 is a constant.
k
Noun
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The eleventh (11th) letter of the alphabet.
"k" comes after "j" and before "l"
filter
Noun
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A filter is a piece of equipment that put gas or liquid through to take out the parts you don't want, to clean it.
Car engines have a fuel filter to keep the fuel clean.
filter
Verb
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If you filter a gas or a liquid, you put it through something that takes out the parts you don't want.
We filter the water.