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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

Even so, scientists still lack a complete understanding of how the brain's complex networks are shaped during this critical period.

From Science Daily • Jan. 16, 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

But the critical period leading up to Snowball Earth was thought to be missing because the rock layers were eroded by the big freeze.

From BBC • Aug. 15, 2024

Alas! how may I attain that self-dependence which alone, at this critical period, suits my forlorn condition?

From The Wanderer (Volume 2 of 5) or, Female Difficulties by Burney, Fanny