- Malthusian⇄adj. of or having to do with Malthus or his theory that the world's population tends to increase faster than the food supply, and that poverty and misery are inevitable unless this trend is checked by war, famine, birth control, or other means.
- Malthusian⇄Malthusian, adjective, noun.
- Malthusian⇄noun a believer in this theory.