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 ?
Out now THIS gripping memoir is like a pitch-dark version of Call the Midwife, dealing with the end of life rather than the beginning.
Undisputed highlight comes when Donal tags along with the hunters to try and catch a crocodile on a pitch-dark river.
Whether someone takes out their stress in a pitch-dark way .
One at a time, the animals would crawl down a narrow shaft and then move through a 40-yard-long passage that empties into the pitch-dark cave, which is always near room temperature.
In these, single figures (or occasionally small groups) captured in midmovement or at the climax of a pose appear isolated and luminous, spotlighted in pitch-dark surroundings: A man spins the wheels of a bicycle as it seems to climb an invisible 6o-degree hill; another hangs agonizingly upside down from a pole; a third, elderly man focuses every ounce of his attention on a ball he's juggling (all works untitled).
Rau made the half-hour drive to Oelman's cabin, finding the door wide open and the place pitch-dark.
And when Lynch cuts away from an aerial shot of the septuagenarian crossing the Mississippi to a view of a pitch-dark cemetery.