tet·ra·hy·dro·naphthalene
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Definition of tetrahydronaphthalene
: an oily liquid hydrocarbon C10H12 obtained by partial hydrogenation of naphthalene in the presence of a catalyst and used chiefly as a solvent (as for paints and lacquers)
— called also 1,2,3,4-tetrahydronaphthalene
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Merriam-Webster unabridged
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