Adult (also known as Adults): A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.

NIH MeSH · D000328Named Groups

Adult

Also known asAdults

Definition

A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.

MeSH classification

  • M01.060.116

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Related concepts

Adolescent

A person 13 to 18 years of age.

Age Groups

Persons classified by age from birth (INFANT, NEWBORN) to octogenarians and older (AGED, 80 AND OVER).

Aged

A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.

Birth Cohort

Persons classified by a particular year or a specific time period of birth.

Centenarians

Persons 100 years of age and older.

Child

A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.

Child, Preschool

A child between the ages of 2 and 5.

Frail Elderly

Older adults or aged individuals who are lacking in general strength and are unusually susceptible to disease or to other infirmity.

Common questions about Adult

What does Adult mean in medicine?
A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. 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 Adult known by any other names?
Yes. Adult is also referred to as Adults 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 Adult sit in the medical classification?
Adult falls under the broader medical category "Named Groups" in the MeSH hierarchy (tree numbers: M01.060.116). 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 Adult?
For a plain-language explanation of Adult - 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 Adult" above.

Source: NIH MeSH 2026 (D000328) — National Library of Medicine, public domain. View official MeSH record ↗