Phenomena and Processes

Superfetation

The FERTILIZATION of an OVUM that takes place when a FETUS is already present in the UTERUS. Superfetation results in an unusual PREGNANCY with fetuses of different ages and sizes developing in utero simultaneously.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The FERTILIZATION of an OVUM that takes place when a FETUS is already present in the UTERUS. Superfetation results in an unusual PREGNANCY with fetuses of different ages and sizes developing in utero simultaneously.

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

1 entry terms
  • Superfetations

MeSH Record

Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

MeSH Hierarchy

Tree Number

  1. G08.686.784w.769w.545w.608w

MeSH Record

NLM Classification

WQ 235

AMA Style

References

  1. National Library of Medicine. Superfetation. Medical Subject Headings (MeSH). 2026. Unique ID D013476. http://id.nlm.nih.gov/mesh/2026/D013476
  2. Superfetation. In: Wikipedia. https://en.wikipedia.org/wiki/Superfetation
  3. Superfetation. In: Wikidata. https://www.wikidata.org/wiki/Q581100