heat-seeking
adjective
(of a detecting device) able to detect sources of infrared radiationa heat-seeking camera
(of a missile) able to detect and follow a source of heat, as from an aircraft enginea heat-seeking missile
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for heat-seeking
Contemporary Examples of heat-seeking
He is a heat-seeking missile for the heart of the right-wing base.
Two Texans Take on DebateSeptember 13, 2011