Origin: Greek prefix hydro-
Hydrocarbon has 2 different meanings across 1 category:
an organic compound containing only carbon and hydrogen
"The geologist explained that crude oil is primarily a mixture of hydrocarbons, which are organic compounds made up solely of carbon and hydrogen atoms."
A compound consisting only of carbon and hydrogen atoms.
"The crude oil sample was found to be a complex mixture of various hydrocarbons, each containing exclusively carbon and hydrogen atoms."