Chronotype (also known as Chronotypes, Morningness Eveningness Preferences): The natural inclination or preference of time of day in which an individual or an organism has the most activity, particularly as it relates to sleeping pattern and circadian sleep-wake preferences.

NIH MeSH · D000094407Psychiatry and Psychology

Chronotype

Also known asChronotypes · Morningness Eveningness Preferences · Morningness Eveningness Preference · Preference, Morningness Eveningness

Definition

The natural inclination or preference of time of day in which an individual or an organism has the most activity, particularly as it relates to sleeping pattern and circadian sleep-wake preferences.

MeSH classification

  • F01.752.227
  • G07.180.562.190.500

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Common questions about Chronotype

What does Chronotype mean in medicine?
The natural inclination or preference of time of day in which an individual or an organism has the most activity, particularly as it relates to sleeping pattern and circadian sleep-wake preferences. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Chronotype known by any other names?
Yes. Chronotype is also referred to as Chronotypes, Morningness Eveningness Preferences, Morningness Eveningness Preference, Preference, Morningness Eveningness in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Chronotype sit in the medical classification?
Chronotype falls under the broader medical category "Psychiatry and Psychology" in the MeSH hierarchy (tree numbers: F01.752.227, G07.180.562.190.500). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Chronotype?
For a plain-language explanation of Chronotype - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Chronotype" above.

Source: NIH MeSH 2026 (D000094407) — National Library of Medicine, public domain. View official MeSH record ↗