Ultrasonics, the study of sound waves with frequencies above the range audible to the human ear, has many alternative synonyms used in various scientific fields. Some popular synonyms for ultrasonics include ultrasonic waves, high-frequency sound waves, sonic waves, and acoustic waves. In medical contexts, terms like ultrasonography or sonography are used to describe diagnostic imaging techniques that rely on the use of ultrasonic waves to generate images of internal organs. Engineering fields commonly use terms like ultrasonic welding, ultrasonic cleaning, or ultrasonic machining to describe manufacturing processes that use the energy of ultrasonic waves to bond, scrub, or cut materials. Regardless of the terminology used, ultrasonics play a crucial role in modern science, medicine, and industry.