Source : Webster's Revised Unabridged Dictionary (1913)

Phenanthrene \Phe*nan"threne\, n. [Phenyl + antracene.] (Chem.)
   A complex hydrocarbon, {C14H10}, found in coal tar, and
   obtained as a white crystalline substance with a bluish
   fluorescence.

Tolane \To*lane"\, n. [From {Toluene}.] (Chem.)
   A hydrocarbon, {C14H10}, related both to the acetylene and
   the aromatic series, and produced artificially as a white
   crystalline substance; -- called also {diphenyl acetylene}.