This will show warmth? I’m suppressing most of triumphant comment (8)
I believe the answer is:
isotherm
'triumphant comment' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'this will show warmth? i'm suppressing most of' is the wordplay.
I cannot really understand how this works, but
'show' could be 'er' (US medical drama) and 'er' is found within the answer.
'i'm' could be 'i' (I've seen this in other clues) and 'i' is located in the answer.
'of' could be 'o' and 'o' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for isotherm that I've seen before include "meteorological line" , "Line joining equally hot spots" , "that's charted to a degree" , "Map line connecting places with same temperature" , "Map line of constant temperature" .)