Surface temperature on Venus (6)
I believe the answer is:
planet
'venus' is the definition.
(thesaurus)
'surface temperature' is the wordplay.
I cannot quite see how this works, but
'surface' could be 'plane' (I've seen this before) and 'plane' is found in the answer.
'temperature' could be 't' (abbreviation) and 't' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'on' is the link.
Can you help me to learn more?
(Other definitions for planet that I've seen before include "Substantial heavenly body" , "Celestial body orbiting around a star" , "Celestial body that revolves around the sun" , "one of seven in suite" , "massive revolver" .)