pyroelectricity
noun
py·ro·elec·tric·i·ty ˌpī-ˌrō-ə-ˌlek-ˈtri-sə-tē 
-ˈtri-stē
: a state of electrical polarization produced (as in a crystal) by a change of temperature
pyroelectric
ˌpī-ˌrō-ə-ˈlek-trik
adjective 
Word History
Etymology
International Scientific Vocabulary
First Known Use
1824, in the meaning defined above