Definition of dismal science in English:

dismal science

noun

usually the dismal science
humorous
  • [in singular] Economics.

    • ‘Moreover, for him, economics was not a dismal science.’
    • ‘The dismal science says, when essential stuff is scarce, you've got to trade something for something else.’
    • ‘That dreadful outlook is one of the reasons economics is considered a dismal science.’