Radiant source in this paper? (3)
I believe the answer is:
sun
This could be a double definition.
'radiant source' is the first definition.
'sun' can be an answer for 'source' (I have seen 'Source of daylight ' mean 'sun' so perhaps 'source' could also mean 'sun'). I am not certain of the 'radiant' bit.
'this paper?' is the second definition.
(The Sun, UK newspaper)
'in' is the link.
Can you help me to learn more?
(Other definitions for sun that I've seen before include "Source of daylight" , "Star round which we orbit" , "Our central star" , "Warmer" , "Shiny" .)