heat-seeking
adjective /ˈhiːt siːkɪŋ/
  /ˈhiːt siːkɪŋ/
[only before noun]- (of a weapon) that moves towards the heat coming from the aircraft, etc. that it is intended to hit and destroy- heat-seeking missiles
 Oxford Collocations DictionaryHeat-seeking is used with these nouns:- missile