population pyramid

American

noun

Sociology.

a graph showing the distribution of a population by sex or gender, age, etc., the depiction of which is typically pyramid-shaped.

population pyramid British

noun

a pyramid-shaped diagram illustrating the age distribution of a population: the youngest are represented by a rectangle at the base, the oldest by one at the apex

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of population pyramid

First recorded in 1945–50

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

population pyramid

While our population pyramid is inverting, people who reach age 65 are now expected to live for at least another 20 years.

From MarketWatch ● Nov. 25, 2025

Over the next 18 years, they will continue to age, and the country’s population pyramid will grow increasingly vase-shaped.

From Slate ● Dec. 28, 2017

An influx of young immigrants would act as a vehicle for rejuvenating its population pyramid.

From Slate ● Nov. 16, 2016

It shows what's known as a population pyramid at each census from 1901 to 2001.

From BBC ● Feb. 2, 2012

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023