Definition of "furthermore"

furthermore

/ˈfɜː(ɹ).ðə(ɹ)ˌmɔː(ɹ)/

adverb
not comparable
1. In addition; besides; further; what's more (i.e. to denote additional information).
  Quotations
  Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.
  2013 July-August, Philip J. Bushnell, “Solvents, Ethanol, Car Crashes & Tolerance”, in American Scientist