Definitions for "High frequency"
Refers to radio frequencies in the 3-30 MHz band. In audio it usually refers to frequencies in the 5-10 kHz band.
The portion of the radio frequency spectrum between 3 and 30 MHz. This frequency range, characterized by wavelengths between 10 and 100 meters, is commonly called the Short Wave band.
Indicates an infrared system that employs frequencies higher than the industry standard. Some examples would be Bang & Olufsen, Kenwood (455KHz) and older Pioneer Elite (1.125MHz). Such devices are never preprogrammed into off-the-shelf remote controls and can generally only be used with very specific learning remote controls. For more information visit this page. See also: frequencies, learning, IRDA, infrared emitter.
positive pressure ventilation (HFPPV) - refers to the delivery of small tidal volumes through an insufflation catheter or endotracheal tube with circuitry having a minimal compressible volume. The characteristic rate is 60 - 100 cycles per minute with inspiration taking 20% to 30% of the total cycle time.
Keywords:  zit, zapping, emergency, facial, alone
penetrates moisture into skin and kills bacteria on contact using electrical currents. added on to any facial or used alone as an emergency zit zapping treatment.
Keywords:  pitch, hitch, piano, tuning, perceived
a pitch that is perceived as above other pitches
Fast vibrations that make a tone of high pitch. HITCH PIN of a piano, a metal pin inserted correctly in the frame to hold one end of a string; the other end is attached to a tuning pin.
a term applied to precision logo making in which a combination of heat molding and silk screening can miniaturize artwork too detailed for embroidery.