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phon

[fon] /fɒn/
noun
1.
a unit for measuring the apparent loudness of a sound, equal in number for a given sound to the intensity in decibels of a sound having a frequency of 1000 cycles per second when, in the judgment of a group of listeners, the two sounds are of equal loudness.
Origin of phon
1930-1935
1930-35; < Greek phōnḗ voice

phon-

1.
variant of phono- before a vowel:
phonic.

phon.

1.
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for phon

phon

/fɒn/
noun
1.
a unit of loudness that measures the intensity of a sound by the number of decibels it is above a reference tone having a frequency of 1000 hertz and a root-mean-square sound pressure of 20 × 10–6 pascal
Word Origin
C20: via German from Greek phōnē sound, voice

phon.

abbreviation
1.
Also phonet. phonetics
2.
phonology
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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phon in Medicine

phon- pref.
Variant of phono-.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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phon in Science
phon
  (fŏn)   
A unit of apparent loudness. The loudness of a signal in phons is equal to the intensity in decibels of a 1,000-hertz tone judged to be as loud as the signal being measured.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Related Abbreviations for phon

phon.

  1. phonetic
  2. phonetics
  3. phonology
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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9
10
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