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noun, feminine

piroelectricidad

/ˌpiɾoeleɡtɾiθiˈdad/

noun, feminine/ˌpiɾoeleɡtɾiθiˈdad/

piroelectricidad is feminine in Spanish.

pyroelectricity (the generation of electric charge as a result of a change in temperature)

By surface analysis, piro- + electricidad.