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tyr

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Tyr

  [teer, tyr]
Use tyr in a Sentence
–noun Scandinavian Mythology.
the god of strife.
Origin:
< ON Týr (pl. tívar gods); see Tiu
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Tyr

 
Biochemistry. tyrosine.

ty⋅ro⋅sine

  [tahy-ruh-seen, -sin, tir-uh-]
–noun Biochemistry.
a crystalline amino acid, HOC6H4CH2CH(NH2)COOH, abundant in ripe cheese, that acts as a precursor of norepinephrine and dopamine. Abbreviation: Tyr; Symbol: Y
Origin:
1855–60; < Gk tȳrós cheese + -ine 2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Tyr   (tîr)   
n.   Mythology
A Norse god of war, son of Odin.

[Old Norse Tȳr; see dyeu- in Indo-European 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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Word Origin & History

tyrosine 
amino acid, 1857, coined 1846 by Ger. chemist Baron von Justus Liebig (1802-73) from Gk. tyros "cheese" + chemical suffix -ine. So called because it was easily obtained from cheese.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: Tyr
Function: abbreviation
tyrosine; tyrosyl

Main Entry: ty·ro·sine
Pronunciation: 'tI-r&-"sEn
Function: noun
: a phenolic amino acidHOC6H4CH2CH(NH2)COOH that is a precursor of several important substances (as epinephrine and melanin) —abbreviation Tyr
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

Tyr abbr.
tyrosine

tyrosine ty·ro·sine (tī'rə-sēn')
n.
Abbr. Tyr
A white crystalline amino acid that is derived from the hydrolysis of proteins such as casein and is a precursor of epinephrine, thyroxine, and melanin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
tyrosine   (tī'rə-sēn')  Pronunciation Key 
A nonessential amino acid. Chemical formula: C9H11NO3. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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