Definition of tantalum in English:

Share this entry


Pronunciation: /ˈtan(t)ləm/


The chemical element of atomic number 73, a hard silver-gray metal of the transition series. (Symbol: Ta)
Example sentences
  • Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.
  • Many rare but technologically important elements, such as tantalum and uranium, continue to be mined from poor regions of the world under conditions that some consider pernicious and hazardous.
  • A second element, tantalum, is always present in these minerals along with niobium.



Pronunciation: /tanˈtalik/
Example sentences
  • The catalyst has a support of niobic acid, tantalic acid or a mixture of niobic acid and tantalic acid or a support containing such acids.
  • The experimental results have shown proposed constructive solutions to accomplish electron-ion powder heating with following particles deformation at a tantalic target.
  • Tantalum is etched by peroxide - the same way it etches tungsten or titanium - by forming its mineral acid, in this case tantalic acid.


Early 19th century: from Tantalus, with reference to its frustrating insolubility in acids.

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.