'C4H4' definitions:

Definition of 'C4H4'

From: GCIDE
  • Tetrol \Tet"rol\, n. [Tetra- + benzol.] (Chem.) A hypothetical hydrocarbon, C4H4, analogous to benzene; -- so called from the four carbon atoms in the molecule. [1913 Webster]
  • Tetrol phenol, furfuran. [Obs.] [1913 Webster]