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1.
Populution is a term used to describe the global population and population growth that continues to exceed the earth's ecological carrying capacity.
People, in becoming mass consumers, have in turn become mass wasters - they have become populution.

Why do people still insist on having large families? They adding to the populution.
by ProFX July 10, 2008
 
2.
over-population, over-crowding, too many people in an small area
The populution of New York City is intense, just like "sardines in a can."
by tavern knight July 22, 2006
 
3.
A contraction of population and pollution, and/ or a contraction of people and pollution, implying a vicious circle in that the continuing increase in population, coupled with stupidity and lack of caring, inevitably leads to an increase in pollution. To a large degree this process can not be stopped due to the second law of thermodynamics (aka the law of entropy) short of catastrophe such as a viral mass extinction. I coined this word independently the early 70's, but without the internet I had no way of knowing if others were using it.
With all of the populution we are duumbed. See also duumbed
by Coffee house Philosopher September 14, 2008
 
4.
when something get's so popular that nobody likes it anymore because its become too diluted
Vice magazine is the definition of populution.
It has become so popular with a polution of people that now it has become a populution.
by DoveTheLinguistic October 16, 2014