Structured Summary
Abstract
The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)
MeSH Record
Classification
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MeSH Record
Aspects Covered
23 allowable subheadings
Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, economics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.
MeSH Record
Indexing Annotation
does not include natural gas ( = NATURAL GAS see FOSSIL FUELS); does not include blood gases ( = OXYGEN /blood or CARBON DIOXIDE /blood); gas embolism = EMBOLISM, AIR; intestinal gases = GASES + INTESTINES /physiol unless clinically referred to as FLATULENCE (Cat C)
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References
- National Library of Medicine. Gases. Medical Subject Headings (MeSH). 2026. Unique ID D005740. http://id.nlm.nih.gov/mesh/2026/D005740
- Gases. In: Wikipedia. https://en.wikipedia.org/wiki/Gas
- Gases. In: Wikidata. https://www.wikidata.org/wiki/Q11432