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Tm

Symbol, Chemistry.
1.

t.m.

1.
true mean.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for Tm

tm

abbreviation
1.
Turkmenistan

Tm

Chemical symbol
1.
thulium

TM

abbreviation
1.
transcendental meditation
2.
Turkmenistan (international car registration)
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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Tm in Medicine

tm abbr.
temperature midpoint (on the Celsius scale)

Tm 1

The symbol for the element thulium.

Tm 2
abbr.

  1. transport maximum

  2. tubular maximum

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Tm in Science
Tm  
The symbol for thulium.
thulium
  (th'lē-əm)   
Symbol Tm
A soft, silver-gray metallic element of the lanthanide series. One of its artificial radioactive isotopes is used as a radiation source in small, portable x-ray machines. Atomic number 69; atomic weight 168.934; melting point 1,545°C; boiling point 1,727°C; specific gravity 9.3; valence 2, 3. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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