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TM
(redirected from thulium)

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
TM
The two-character ISO 3166 country code for TURKMENISTAN.

TM
1. ISO 3166-1 alpha-2 code for Turkmenistan. This is the code used in international transactions to and from Turkmen bank accounts.

2. ISO 3166-2 geocode for Turkmenistan. This is used as an international standard for shipping to Turkmenistan. Each Turkmen province has its own code with the prefix "TM." For example, the code for the Province of Ahal is ISO 3166-2:TM-A.


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They’re generally clustered in a separate grouping at the bottom of the table, are known collectively as the lanthanoids, and these are their names, in order of atomic number (57-70): lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, and ytterbium.
Each segment contains small amounts of ions of relatively rare metals, such as dysprosium, thulium, and cerium, which fluoresce in different colors.
The laser rod, or lasing medium, currently being tested uses erbium, thulium, and holmium added to a YAG crystal.
 
 
 
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