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polysomnogram

American  
[pol-ee-som-nuh-gram] / ˌpɒl iˈsɒm nəˌgræm /

noun

  1. a record of a person's sleep pattern, breathing, heart activity, and limb movements during sleep. PSG


Other Word Forms

Etymology

Origin of polysomnogram

poly- + Latin somn ( um ) sleep + -o- + -gram 1; for sense of poly-, cf. polygraph

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.

The clinical standard for measuring slumber is an in-lab overnight study, or a polysomnogram.

From The Wall Street Journal • Jun. 7, 2026

While my polysomnogram showed just 28 minutes of deep sleep, each device said I got over an hour.

From The Wall Street Journal • Jun. 7, 2026

This may not detect mild apnea and is prone to false negatives, so if results are negative but your doctor strongly suspects apnea, you’ll need a polysomnogram.

From Washington Post • Jun. 30, 2016

If a sleep-disrupting problem is suspected, an overnight sleep lab polysomnogram may be in order.

From Washington Post • Jun. 30, 2016

Doctors rely on results from a sleep study, or polysomnogram, done while you're hooked up to electrodes in a sleep lab.

From US News • Jun. 16, 2015

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