Phenomena and Processes

Third Pregnancy Trimester

The last third of a human PREGNANCY, from the beginning of the 29th through the 42nd completed week (197 to 294 days) of gestation.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The last third of a human PREGNANCY, from the beginning of the 29th through the 42nd completed week (197 to 294 days) of gestation.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

15 entry terms
  • Last Trimester
  • Pregnancy Trimester, Third
  • Pregnancy, Third Trimester
  • Trimester, Third
  • Last Trimesters
  • Pregnancies, Third Trimester
  • Pregnancy Trimesters, Third
  • Third Pregnancy Trimesters
  • Third Trimester
  • Third Trimester Pregnancies
  • Third Trimester Pregnancy
  • Third Trimesters
  • Trimester, Last
  • Trimesters, Last
  • Trimesters, Third

MeSH Record

Aspects Covered

11 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, drug effects, ethnology, genetics, immunology, metabolism, physiology, psychology, radiation effects, urine.

MeSH Record

Indexing Annotation

human only; check tags HUMANS & FEMALE & PREGNANCY; "at term": consider better LABOR, OBSTETRIC

MeSH Record

History Note

76; was PREGNANCY, THIRD TRIMESTER 1975

MeSH Record

Previous Indexing

  • Gestational Age (1968-1974)
  • Pregnancy (1966-1974)
  • Time Factors (1967-1974)

MeSH Hierarchy

Tree Number

  1. G08.686.707w.520

AMA Style

References

  1. National Library of Medicine. Third Pregnancy Trimester. Medical Subject Headings (MeSH). 2026. Unique ID D011263. http://id.nlm.nih.gov/mesh/2026/D011263
  2. Third Pregnancy Trimester. In: Wikidata. https://www.wikidata.org/wiki/Q70680242