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
heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
obtainable or accessible and ready for use or service; "kept a fire extinguisher available"; "much information is available through computers"; "available in many colors"; "the list of available candidates is unusually long"
convenient for use or disposal; "the house is available after July 1"; "2000 square feet of usable office space"
not busy; not otherwise committed; "he was not available for comment"; "he was available and willing to accompany her"
intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism
characterized by oppressive heat and humidity; "the summer was sultry and oppressive"; "the stifling atmosphere"; "the sulfurous atmosphere preceding a thunderstorm"
glowing or shining like fire; "from rank to rank she darts her ardent eyes"- Alexander Pope; "frightened by his ardent burning eyes"
characterized by strong enthusiasm; "ardent revolutionaries"; "warm support"
characterized by intense emotion; "ardent love"; "an ardent lover"; "a burning enthusiasm"; "a fervent desire to change society"; "a fervent admirer"; "fiery oratory"; "an impassioned appeal"; "a torrid love affair"