screening

noun

1. Mesh material that is used to screen (as in a "screen door").
2. The examination and treatment of a material to detect and remove unwanted fractions by passing it through a screen (sieve).
3. Material removed by such a process; refuse left after screening sand, coal, ashes, etc.
4. The examination of any material or persons to detect problems through any of various testing, checking, or filtering processes, as
5. Identifying cases of a disease in a population of asymptomatic persons.
6. Identifying latent unsuitabilities in business propositions, job applicants, or investment opportunities.
7. A test or method used for this purpose.
8. The showing of a film, typically by projecting it on a screen.
9. Shielding.
10. Action done by the serving team to prevent the opposing team from seeing the server and the flight path of the ball.