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Showing results for critical period. Search instead for cretaceous period.
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

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These newly discovered quasars come from a critical period known as the epoch of reionization, when the first stars and galaxies transformed the early universe by ionizing the neutral hydrogen gas that once filled space.

From Science Daily Jul. 9, 2026

“Sudden explosive noise, concussive blasts, and bright flashes have the potential to startle young birds, creating unnecessary risk during a critical period of development.”

From Los Angeles Times Jun. 24, 2026

IPOs conducted from 2007 to 2022, my co-authors and I examined what happens in the critical period just before and after companies go public.

From Salon Jun. 13, 2026

Rivian faces “a critical period of execution,” Barclays analyst Dan Levy wrote in a recent report.

From Barron's Jun. 9, 2026

This was about the time of the critical period in the life of the Episcopal Church in Virginia.

From Historic Fredericksburg The Story of an Old Town by Goolrick, John T.

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