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pyroelectric
CIDE DICTIONARY
pyroelectric, a. [Pyro- + electric.].
Pertaining to, or dependent on, pyroelectricity; receiving electric polarity when heated. [1913 Webster]
pyroelectric, n.
A substance which becomes electrically polar when heated, exhibiting opposite charges of statical electricity at two separate parts, especially the two extremities. [1913 Webster]
OXFORD DICTIONARY
pyroelectric, adj. having the property of becoming electrically charged when heated.
Derivative
pyroelectricity n.
For further exploring for "pyroelectric" in Webster Dictionary Online