deflector

Noun

deflector (plural deflectors)

1. Something which deflects something else, especially a stream of fluid or particles.
   • The deflector assembly contains a plurality of vanes which change the direction of the solar energy to the vertical, while constantly keeping the same side of the deflector facing the sun.1992 Nasa Patents Available for Licensing from the George C. Marshall Space Flight Center
2. A diaphragm in a lamp, stove, etc. by which the flame and gases are brought together to improve combustion.
3. A force field; an invisible barrier used as a protective shield.
   • The blasters are those beams of ravening destruction which take care of recalcitrant meteorites in a spaceship's course when the deflectors can't handle them.1945 May, Murray Leinster, “First Contact”, in Astounding Stories, volume 35, number 3
   • Deflectors say there's something there, sensors say there isn't. Density negative. Radiation negative. Energy negative.1966 September 22, Samuel A. Peeples, Where No Man Has Gone Before (Star Trek), episode 3, spoken by Spock (Leonard Nimoy)