pyroelectric
Pyr`o*e*lec"tric, a. Etym: [Pyro- + electric.] (Physics) Defn: Pertaining to, or dependent on, pyroelectricity; receiving electric polarity when heated. Pyr`o*e*lec"tric, n. (Physics) Defn: A substance which becomes electrically polar when heated, exhibiting opposite charges of statical electricity at two separate parts, especially the two extremities.