Phenomena and Processes

Weightlessness

Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. (From NASA Thesaurus, 1988)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. (From NASA Thesaurus, 1988)

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

See Also

MeSH Record

Synonyms

3 entry terms
  • Zero Gravity
  • Gravity, Zero
  • Microgravity

MeSH Record

Aspects Covered

1 allowable subheadings

Indexed with the subheadings adverse effects.

MeSH Record

Indexing Annotation

natural only: WEIGHTLESSNESS SIMULATION and WEIGHTLESSNESS COUNTERMEASURES are also available

MeSH Hierarchy

Tree Number

  1. G01w.060.350w.369.400w.900w

MeSH Record

NLM Classification

WD 752

AMA Style

References

  1. National Library of Medicine. Weightlessness. Medical Subject Headings (MeSH). 2026. Unique ID D014893. http://id.nlm.nih.gov/mesh/2026/D014893
  2. Weightlessness. In: Wikipedia. https://en.wikipedia.org/wiki/Weightlessness
  3. Weightlessness. In: Wikidata. https://www.wikidata.org/wiki/Q4299309