screening

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Refuse, such as waste coal, separated by a screen.
• noun The mesh material used to make door or window screens.
• noun A presentation of a movie.
• noun A systematic examination or assessment, done especially to detect an unwanted substance or attribute.

from The Century Dictionary.

• noun In electricity and magnetism: The method of surrounding the apparatus inside of the screen with a shield of soft iron, so as to protect it from external magnetic influences.
• noun The method of surrounding with a shield, cage, or netting made of good conducting material for protection against external electric forces. In large conductors carrying alternating currents, the outside part of the conductor may screen the inside so that less or no current flows in the interior, and the effective resistance of the conductor is thereby increased.

from the GNU version of the Collaborative International Dictionary of English.

• noun the process of examining or testing objects methodically to find those having desirable properties. See screen{3}.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable Mesh material that is used to screen (as in a "screen door").
• noun The process of checking or filtering.
• noun The showing of a film
• noun The examination and treatment of a material to detect and remove unwanted fractions
• noun in the plural Material removed by such a process; refuse left after screening sand, coal, ashes, etc.
• noun soccer shielding
• verb Present participle of screen.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the display of a motion picture
• noun testing objects or persons in order to identify those with particular characteristics
• noun the act of concealing the existence of something by obstructing the view of it
• noun fabric of metal or plastic mesh