With power, heat, atom can be new inside? It’s an illusion (7)
I believe the answer is:
phantom
'illusion' is the definition.
(phantom is a kind of illusion)
'with power heat atom can be new inside? it's an' is the wordplay.
I cannot quite understand how this works, but
'power' could be 'p' and 'p' is found in the answer.
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is found within the answer.
'an' could be 'a' and 'a' is found within the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for phantom that I've seen before include "Wraith" , "Blush" , "Illusion (at the opera?)" , "Apparition, spectre" , "Spirit" .)