noun
saturated hydrocarbon
Technical term in chemistry for a hydrocarbon with only single bonds between carbon atoms.
メタンは最も単純な飽和炭化水素である。
Methane is the simplest saturated hydrocarbon.
Compound of 飽和 (saturation) + 炭化水素 (hydrocarbon). The term is a direct calque from English 'saturated hydrocarbon'.