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tau

 - 8 dictionary results

tau

  [tou, taw for 1, 2, 4; tahv, tawv for 3]
Use tau in a Sentence
–noun
1. the 19th letter of the Greek alphabet (T, τ).
2. the consonant sound represented by this letter.
3. tav.
4. Also, tauon. Physics. tau lepton.
Origin:
1250–1300; ME < L < Gk taû < Sem; cf. tav

tau lepton

 
–noun Physics.
an unstable lepton with a mass approximately 3500 times that of the electron. Symbol: T
Also called tau, tauon.

Origin:
1975–80

tav

  [tahv, tawv, tahf, tawf]
–noun
1. the 23rd letter of the Hebrew alphabet.
2. the consonant sound represented by this letter.
Also, tau, taw.

Origin:
< Heb tāw lit., mark
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To tau
tau   (tou, tô)   
n.  

  1. The 19th letter of the Greek alphabet. See Table at alphabet.

  2. An elementary particle of the lepton family, having a mass about 3,550 times that of the electron, a negative electric charge, and a mean lifetime of 3 × 10-13 seconds. See Table at subatomic particle.


[Greek, of Phoenician origin; see tww in Semitic roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: tau
Pronunciation: 'tau, 'to
Function: noun
: a protein that binds to and regulates the assembly and stability of neuronal microtubules and thatis found in an abnormal form as the major component of neurofibrillary tangles called also tau protein
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

tau n.

Symbol τ The 19th letter of the Greek alphabet.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Abbreviations & Acronyms
TAU
Taurus
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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Encyclopedia

tau

elementary subatomic particle similar to the electron but approximately 3,500 times heavier. Like the electron and the muon, the tau is an electrically charged member of the lepton family of subatomic particles; the tau is negatively charged, while its antiparticle is positively charged

Learn more about tau with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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