corpuscular : Idioms & Phrases

• that which attempts to account for the phenomena of nature, by the motion, figure, rest, position, etc., of the minute particles of matter.

Webster 1913

• noun a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons)
  particulate radiation.
  

WordNet

• noun (physics) the theory that light is transmitted as a stream of particles
  corpuscular theory.
  

WordNet

• (Opt.), the theory enunciated by Sir Isaac Newton, that light consists in the emission and rapid progression of minute particles or corpuscles. The theory is now generally rejected, and supplanted by the undulatory theory.

Webster 1913

• noun (physics) the theory that light is transmitted as a stream of particles
  corpuscular theory.
  

WordNet

• noun the minute pressure exerted on a surface normal to the direction of propagation of a wave
  radiation pressure.
  

WordNet