What is of or pertaining to tantalum; derived from, or containing, tantalum; specifically, designating any one of a series of acids analogous to nitric acid and the polyacid compounds of phosphorus called?

tantalic — Of or pertaining to tantalum; derived from, or containing, tantalum; specifically, designating any one of a series of acids analogous to nitric acid and the polyacid compounds of phosphorus. (Webster's 1913.)

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