![]() 1,037,518,600 visitors served. |
|
![]() Dictionary/ thesaurus | ![]() Medical dictionary | ![]() Legal dictionary | ![]() Financial dictionary | ![]() Acronyms | ![]() Idioms | ![]() Encyclopedia | ![]() Wikipedia encyclopedia | ? |
ultrasonics |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson | 0.04 sec. |
|
ultrasonics /ul·tra·son·ics/ (-son´iks) the science dealing with ultrasonic sound waves.
ultrasonics that part of the science of acoustics dealing with the frequency range beyond the upper limit of perception by the human ear (above 20,000 cycles per second), but usually restricted to frequencies above 50,000 hertz. Ultrasonic radiation is injurious to tissues because of its thermal effects when absorbed by living matter, but in controlled doses it is used therapeutically to selectively break down pathological tissues, as in treatment of arthritis and lesions of the nervous system, and also as a diagnostic aid by visually displaying echoes received from irradiated tissues, as in echocardiography and echoencephalography. See also ultrasonography. |
|
? Mentioned in | |
|---|---|
|
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|
|---|