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population pyramid

noun

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

population pyramid

noun

  1. 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
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Word History and Origins

Origin of population pyramid1

First recorded in 1945–50
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Example Sentences

To address this inverse population pyramid, the state ended the one-child policy in 2015, introducing a national two-child policy in its place.

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