tantalic
(tan tal′ik)
adjective
- of, derived from, or containing tantalum, esp. pentavalent tantalum
- 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.