sonic barrier, sound barrier
A sharp, sudden increase in aerodynamic drag on an aircraft approaching the speed of sound.
Historically perceived as a physical obstacle that might prevent an aircraft from traveling at speeds faster than the speed of sound.
Used in oil and gas projects, a process that determines the size or holding capacity of a well, using a pulse-echo system which measures the distance between a sound-originating instrument and a sound-reflecting surface.
sonicate (SAH ni kayt") (verb)
, sonicates; sonicated; sonicating
To expose sounds or ultrasounds to substances, cells, or viruses, etc. in order to disperse, to separate, or to fragment them: Some people sonicate
a mixture of foods so they are thoroughly broken down into fluids.
There are some agencies that sonicate jewelry in order to clean such items safely and to a greater degree than any other method.
1. Chemistry in which reactions occur under ultrasound.
2. Any chemical change; such as, in a reaction type or rate, that occurs in response to sound or ultrasound.
The employment of pulse-echo techniques that are used to study intracranial structures and disease.
A graphical representation, produced by a sonograph, of the distribution of sound energy among different frequencies, especially as a function of time.
An instrument that uses the differential transmission and reflection of ultrasonic waves in order to provide an image of a bodily organ.
Related information at "Oceanic Sounds in a Realm of Silence".