pitch

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pitch

 [pich]
1. a dark, more or less viscous residue from distillation of tar and other substances.
2. any of various bituminous substances such as natural asphalt.
3. a resin from the sap of some coniferous trees.
4. the quality of sound dependent on the frequency of vibration of the waves producing it.

pitch

(pich),
A resinous substance obtained from tar after the volatile substances have been expelled by boiling.
Synonym(s): pix
[L. pix]

pitch

(pich)
1. a dark viscous residue from distillation of tar and other substances.
2. any of various bituminous substances such as natural asphalt.
3. a resin from the sap of some coniferous trees.
4. the quality of sound dependent principally on its frequency.

pitch

Etymology: ME, picchen
1 the highness or lowness of a tone or sound depending on the rate of vibration of the sound source.
2 (in helical computed tomography) the ratio of table advancement per 360-degree rotation of the x-ray tube to the detector collimator.

pitch

(pich)
Auditory perception of tone on a scale ranging from low to high, based on the frequency of vibration of the object emitting the tone. For the human voice, pitch relates to frequency of vibration of the vocal folds.
See: voice, frequency
[L. pix]

pitch

1. a dark, more or less viscous residue from distillation of tar and other substances.
2. natural asphalt of various kinds.
3. the quality of sound dependent on the frequency of vibration of the waves producing it

coal tar pitch

Patient discussion about pitch

Q. What causes high pitch ringing in one ear?

A. I never knew that about Iron. Thank you F3_4u

More discussions about pitch
References in periodicals archive ?
In a pitch-black room, a penlight is a significant improvement.
YOU MIGHT remember ``The Ladykillers,'' the pitch-black caper comedy starring Alec Guinness that came out in 1955.
We're investing in a major new facility that will allow the team to test the sophisticated suite of optical benches, sensors, mirrors and lasers, which include items such as a low-light sensor that can see a dollar bill in a pitch-black room.
Hallways are stretched to impossible lengths, and Max will run into pitch-black areas more than once.
This pitch-black parable of corruption at the highest and lowest levels of government virtually takes no prisoners, and its angry humor is mighty crude to boot.
THE PITCH-BLACK COMEDY ``Death to Smoochy'' makes for some pretty funny satire - for about 40 minutes.
Michael Pariseau, owner of Hidden Springs Equestrian Center and Stallion School in Mareno Valley, stood beside a Friesian stallion, its pitch-black hair lustrous under the sunshine, and demonstrated what the horse undergoes when not performing.
But, hey, we're sure it gets lonely working all those pitch-black nights.
Its plot goes straight to the darkest recesses of our collective imagination, borrowing from such diverse sources as the brothers Grimm, MTV's ``Real World'' (from hell) and the bogeyman demons that chase us in the pitch-black night.
They want the pitch-black, slightly slanted ovals wrapped around Keanu Reeves' eyes, and they're dying to try on the stemless spectacles Laurence Fishburne hid behind.
It's like walking into a pitch-black room and you feel off balance.