| altazimuth | (noun) an instrument that measures the altitude and azimuth of celestial bodies; used in navigation | - |
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| azimuth | (noun) the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian | Synonyms: AZ |
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| azimuthal | (adjective) of or relating to or in azimuth | - |
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| bismuth | (noun) a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals | Synonyms: atomic number 83, Bi |
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| bismuthal | (adjective) of or relating to bismuth | - |
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| bismuthic | (adjective) containing bismuth (especially in the pentavalent state) | - |
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