| butane | (noun) occurs in natural gas; used in the manufacture of rubber and fuels | - |
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| heptane | (noun) a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings | - |
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| octane | (noun) any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent | - |
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| soutane | (noun) a long cassock with buttons down the front; worn by Roman Catholic priests | - |
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| tramontane | (noun) a cold dry wind that blows south out of the mountains into Italy and the western Mediterranean | Synonyms: tramontana |
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| ultramontane | (noun) a Roman Catholic who advocates ultramontanism (supreme papal authority in matters of faith and discipline) | - |
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