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Synonyms

critical period

British  

noun

  1. psychol a period in a lifetime during which a specific stage of development usually occurs. If it fails to do so, it cannot readily occur afterwards

"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

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.

Some scientists said that infancy can be a critical period to shape the microbiome, and potentially prevent disease and improve health later on.

From The Wall Street Journal • Mar. 3, 2026

The trajectory of the market will depend on where costs are during a critical period beginning in late January.

From Barron's • Jan. 6, 2026

Further, the results align nicely with prior research suggesting that infancy is a critical period that shapes the health and strength of the immune system throughout life, the researchers say.

From Science Daily • May 10, 2024

The critical period for the fall-run salmon in the Sacramento is while the eggs are incubating in their gravel beds.

From Los Angeles Times • Apr. 18, 2024

During the most critical period of the work the structure visibly moved, and the apex of the spire now leans 3ft. 5in. out of the perpendicular towards the north-west.

From Ecclesiastical Curiosities by Various