geography definition of overpopulation
Medical Definition of OVERPOPULATION. : the condition of having a population so dense as to cause environmental deterioration, an impaired quality of life, or a population crash. â overÂ·popÂ·uÂ·latÂ·ed \-Ëpaep-ËpÃ¤p-yÉ-ËlÄt\ Éd. adjectiveull Definition of OVERPOPULATION. : the condition of having a population so dense as to cause environmental deterioration, an impaired quality of life, or a population crash. See overpopulation defined for English-language learners. See overpopulation defined for kids.