资料来源 : Webster's Revised Unabridged Dictionary (1913)

Metaxylene \Met`a*xy"lene\, n. [Pref. meta- + xylene.] (Chem.)
   That variety of xylene, or dimethyl benzene, in which the two
   methyl groups occupy the meta position with reference to each
   other. It is a colorless inf?ammable liquid.