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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.

Changes in the ability to see clearly and correctly were limited in older children, while the youngest children had more improvement as the treatment was delivered during a critical period of visual development.

From BBC • Apr. 22, 2026

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

Lingering distortions might make it harder for investors and policymakers to track inflation during a critical period when many are hyperfocused on how big changes to trade, immigration and fiscal policy are affecting the economy.

From The Wall Street Journal • Dec. 18, 2025

He therefore transferred Gorchakov to Vienna, where the latter remained through the critical period of the Crimean War.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various