gross national product Syllabification: (gross na·tion·al prod·uct) (abbreviation: GNP)Translate gross national product | into French | into Italian | into Spanish Definition of gross national product noun the total value of goods produced and services provided by a country during one year, equal to the gross domestic product plus the net income from foreign investments. gross national product in other Oxford dictionaries Definition of gross national product in the British & World English dictionary