Dictionary.com
Thesaurus.com
Showing results for critical period. Search instead for final 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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“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

The first few years of life are a critical period for both brain development and the maturation of the immune system.

From Science Daily Jun. 2, 2026

Over the next two years—a critical period in the AI transition—Wall Street analysts expect Nvidia’s EPS to hit $12.37, giving the stock a P/E of 17 times.

From Barron's May 29, 2026

The treatment of Julian during this critical period of his life must have been altogether injurious to the healthy development of his character.

From Sermons by Lightfoot, J. B.

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training