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tripyramidTRIPYR'AMID, n. [L. tres and pyramis.] In mineralogy, a genus of spars, the body of which is composed of single pyramids, each of three sides, affixed by their base to some solid body. |
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tripyramidTRIPYR'AMID, n. [L. tres and pyramis.] In mineralogy, a genus of spars, the body of which is composed of single pyramids, each of three sides, affixed by their base to some solid body. |