Had in mind low temperature (5)
I believe the answer is:
meant
'had in mind' is the definition.
(mean can mean to intend or have in mind)
'low temperature' is the wordplay.
'low' becomes 'mean' (both can mean nasty).
'temperature' becomes 't' (abbreviation).
'mean'+'t'='MEANT'
(Other definitions for meant that I've seen before include "represented" , "Signified" , "Intended, had in mind" , "Had as intention or purpose" , "planned" .)