Definitions for "Population pyramid"
Keywords:  cohort, graph, conventionally, bar, age
A means of illustrating the age structure of a population diagrammatically, by placing the youngest age class at the base and stacking successive age classes above it.
a type of multiple bar graph used to show the proportions of males and females of different ages in the populations of a country
A graphic representation of the number or portion of males and females in each of several age categories in a population.