Search the Dictionary:

 
A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
 

population
World Population Growth, courtesy of the World Resources Institute.

population:

The number of organisms that live in a particular area or region. In the year 2010, the human world population is estimated to be nearly seven billion people, about four times what it was at the beginning of the twentieth century. Also, a group of organisms of the same kind. Also, the number of items or objects in a particular group, such as the population of stars in a galaxy.