'Radiator' definitions:

Definition of 'radiator'

From: WordNet
noun
Any object that radiates energy
noun
Heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
noun
A mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan

Definition of 'Radiator'

From: GCIDE
  • Radiator \Ra"di*a`tor\ (r[=a]"d[i^]*[=a]`t[~e]r), n.
  • 1. That which radiates or emits rays, whether of light or heat; especially, that part of a heating apparatus from which the heat is radiated or diffused; as, a steam radiator. [1913 Webster]
  • 2. Any of various devices for cooling an internal substance by radiation, as a system of rings on a gun barrel for cooling it, or a nest of tubes with large radiating surface for cooling circulating water, as in an automobile. [Webster 1913 Suppl.]
  • 3. (Wireless Teleg.) An oscillator. [Webster 1913 Suppl.]

Synonyms of 'radiator'

From: Moby Thesaurus