photogen
n. மெழுகெண்ணெய் வகை, ஔதயுற்பத்தி உறுப்பு.
Pho"to*gen, n. Etym: [Photo- + -gen.] (Chem.) Defn: A light hydrocarbon oil resembling kerosene. It is obtained by distilling coal, paraffin, etc., and is used as a lubricant, illuminant, etc. [Written also photogene.]