acoustic turbulence

a·cous·tic tur·bu·lence

(ă-kū'stik tŭr'byū-lens)
Swirling effect produced within the confined space of a periodontal pocket by continuous stream of fluid flowing over an electronically powered instrument tip, which disrupts plaque biofilm.
Medical Dictionary for the Dental Professions © Farlex 2012
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To make room for the many innovations in plasma physics since he prepared the 2012 first edition, Horton has dropped from the second edition his treatments of ion acoustic turbulence, the compact high-field ignition machines, and some topics special to the International Thermonuclear Experimental Reactor (ITER) program.
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