Englishfor English speakers
gravitational
—
adjective
of or relating to or caused by gravitation
mass
Noun
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A measure of how much material is in something.
The Earth has much more mass than the moon.
The spacesuit weighed 75 pounds on Earth but here in outer space it weighed nothing, although its mass was exactly the same.
—
Much material.
A mass of dirty branches stopped the river.
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A Christian ceremony in memory of .
He goes to mass every Sunday.
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A crowd of people.
A mass of protesters gathered at city hall.
defect
Noun
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A defect in something is a mistake or problem that makes the thing not perfect.
This gem has a defect, so it is not worth much.
—
A defect is something that is not perfect.
defect
Verb
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If you defect from a group or country, you leave it and join a different side.
In 1961, defected from Russia.