PZT is a common acronym for Lead Zirconate Titanate piezoelectric ceramic. For power ultrasonics, significant compositions include PZT4 and PZT8 (and variations).

'PZT' was a registered trademark of Vernitron Corporation (formerly Clevite Corporation) although it appears to have been abandoned since it is no longer registered with the United States Patent and Trademark Office. Note: Morgan Technical Ceramics acquired Vernitron in 1989 and uses 'PZT' to designate its various piezoelectric compositions.

See Manufacturer's piezoelectric cross-reference.