R1A1D2I1A1T1I1O1N1
10 points
RADIATION is validvalid
the act of radiating [n RADIATIONS]
heat transport without the intervention of matter, as in the transport of heat from the Sun to the Earth [n -S]
the act of radiating [n RADIATIONS]
heat transport without the intervention of matter, as in the transport of heat from the Sun to the Earth [n -S]