radiation (n.)
- actinism
- attenuation
- beam
- blackout
- broadcast
- broadcasting
- chiaroscuro
- contrast
- diffraction
- diffusion
- dilution
- dispensation
- dispersal
- dispersion
- dissemination
- dissipation
- distribution
- divergence
- emanation
- emission
- enlightenment
- evaporation
- expansion
- fragmentation
- gleam
- highlight
- illumination
- irradiation
- leam
- light
- lighting
- patch
- pencil
- photon
- photosensitivity
- propagation
- publication
- radiance
- radiancy
- radius
- ray
- ribbon
- scattering
- shedding
- sidelight
- spattering
- splay
- spoke
- spread
- spreading
- sprinkling
- streak
- stream
- streamer
- strewing
- tonality
- weightlessness
