n.
Pronunciation: ˌ r ā -d ē - ' ā -sh ə n
Function: noun
Date: 15th century
1 a : the action or process of radiating b : the process of emitting radiant energy in the form of waves or particles c (1) : the combined processes of emission, transmission, and absorption of radiant energy (2) : the transfer of heat by radiation ― compare CONDUCTION , CONVECTION
2 a : something that is radiated b : energy radiated in the form of waves or particles
3 : radial arrangement
4 : ADAPTIVE RADIATION
5 : RADIATOR
– ra · di · a · tion · al \ -shn ə l, -sh ə -n ə l \ adjective
– ra · di · a · tion · less \ -sh ə n-l ə s \ adjective
– ra · di · a · tive \ ' r ā -d ē - ˌ ā -tiv \ adjective