Tm
Symbol, Chemistry.
Definition for tm (2 of 3)
Definition for tm (3 of 3)
t.m.
true mean.
Example sentences from the Web for tm
British Dictionary definitions for tm (1 of 3)
tm
the internet domain name for
Turkmenistan
British Dictionary definitions for tm (2 of 3)
Tm
the chemical symbol for
thulium
British Dictionary definitions for tm (3 of 3)
TM
abbreviation for
transcendental meditation
Turkmenistan (international car registration)
Medical definitions for tm
tm
abbr.
temperature midpoint (on the Celsius scale)
Scientific definitions for tm (1 of 2)
Tm
The symbol for thulium.
Scientific definitions for tm (2 of 2)
thulium
[ thōō′lē-əm ]
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.