noun
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(uncountable) Mesh material that is used to screen (as in a "screen door").
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The examination and treatment of a material to detect and remove unwanted fractions by passing it through a screen (sieve).
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(in the plural) Material removed by such a process; refuse left after screening sand, coal, ashes, etc.
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(by extension, uncountable) The examination of any material or persons to detect problems through any of various testing, checking, or filtering processes, as:
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(countable) A test or method used for this purpose.
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The showing of a film, typically by projecting it on a screen.
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(soccer) Shielding.
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(volleyball) Action done by the serving team to prevent the opposing team from seeing the server and the flight path of the ball.