Real Dictionary

radiate
verb: If something radiates heat or light, heat or light comes from it.
verb: If things radiate out from a place, they form a pattern that is like lines drawn from the centre of a circle to various points on its edge.
verb: If you radiate an emotion or quality or if it radiates from you, people can see it very clearly in your face and in your behaviour.

radiate in American English
to send out rays of heat, light, etc.; be radiant
adjective: radiating from a center
intransitive verb: to extend, spread, or move like rays or radii from a center
transitive verb: to emit in rays; disseminate, as from a center

radiate in British English
adjective: having rays; radiating
verb: to emit (heat, light, or some other form of radiation) or (of heat, light, etc) to be emitted as radiation