An optical filter in which the wavelengths that are not transmitted are removed by interference rather than by absorption or scattering.

An instrument used to study the differences in the phase of light transmitted through a specimen.

(law, torts) Intentional damage to a person's contractual or other business relationships.

(US) To handle problems or remove obstacles for another person, especially for a person in authority / past participle of run interference

(baseball) A form of interference in which a catcher intentionally or inadvertently physically hinders a batter from the opportunity to legally swing at a pitched ball, and for which the catcher is charged an error.

(baseball) An instance of a hitter being awarded first bases, due to the catcher touching the batter's bat during his or her time at bat.

(telecommunications) Interference resulting from noise or unwanted signals entering a device by conductive coupling, i.e., by direct coupling.

simple past tense of run interference

Third-person singular simple present indicative form of run interference

present participle of run interference