Dictionary.net

The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.

The doctrine that population increases in geometrical progression; and the teaching, based upon this doctrine, that overpopulation should be prevented by sexual continence or by late marriage.

The doctrine that at the normal rate of increase the population tends to increase faster than the means of substance can; and that, therefore, society should check the growth of population by late marriages and sexual continence.