tantalic

(tan talik)

adjective

  1. of, derived from, or containing tantalum, esp. pentavalent tantalum
  2. designating any of several colorless, crystalline, acidic, hydrated tantalum pentoxides, TaO·xHO, that form salts with bases

See tantalic in American Heritage Dictionary 4

adjective
Of, relating to, or containing tantalum.
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