gas main: meaning, definition, pronunciation and examples
C1Technical / Formal
Quick answer
What does “gas main” mean?
A large underground pipe that is the primary supply line for distributing natural gas or manufactured gas from the source to local service lines that connect to buildings.
Audio
Pronunciation
Definition
Meaning and Definition
A large underground pipe that is the primary supply line for distributing natural gas or manufactured gas from the source to local service lines that connect to buildings.
The infrastructure term can metaphorically refer to a critical, central supply line of any essential resource. In disaster/emergency planning contexts, 'gas main' signifies a specific point of vulnerability or hazard.
Dialectal Variation
British vs American Usage
Differences
No significant lexical difference. The term is identical in both varieties. Potential minor differences in technical specifications (e.g., pipe materials, pressure standards) are not reflected in everyday language.
Connotations
Associated with utility infrastructure, public safety, and urban planning. Connotations are neutral/technical in both varieties.
Frequency
Similar frequency in both UK and US English, primarily in contexts related to construction, civil engineering, utility work, and emergency services.
Grammar
How to Use “gas main” in a Sentence
The gas main runs under [Street Name].Workers are repairing [a/the] gas main.There was an explosion caused by [a] ruptured gas main.Vocabulary
Collocations
Examples
Examples of “gas main” in a Sentence
verb
British English
- The council plans to gas main the new estate next quarter.
- The street was closed while they gas-mained the development.
American English
- The city will gas main the new subdivision next fall.
- The road was blocked while they gas-mained the neighborhood.
adverb
British English
- [Not a standard adverbial form for this noun]
American English
- [Not a standard adverbial form for this noun]
adjective
British English
- The gas-main repair works will last a fortnight.
- They issued a gas-main safety alert.
American English
- The gas-main repair work will last two weeks.
- They issued a gas-main safety advisory.
Usage
Meaning in Context
Business
Discussed in contracts for utility installation, infrastructure investment, and property development due diligence.
Academic
Appears in engineering, urban planning, and public policy papers on infrastructure and energy distribution.
Everyday
Used in news reports about accidents, roadworks causing disruptions, or safety warnings from utility companies.
Technical
Precise term in civil, mechanical, and safety engineering; used in blueprints, regulations, and repair manuals.
Watch out
Common Mistakes When Using “gas main”
- *'He works on the gases main.' (Incorrect pluralization of the first noun in the compound) Correct: 'He works on the gas mains.'
- *'The main of gas exploded.' (Incorrect word order and article use) Correct: 'The gas main exploded.'
FAQ
Frequently Asked Questions
No. The gas main is the large, high-pressure pipe running under the street. The smaller pipe that branches off it to connect to your house meter is called a 'gas service line' or 'service connection'.
The gas utility company or the municipal authority that owns the infrastructure is responsible for the gas main. The property owner is typically responsible for the service line from the main to the building and all internal piping.
Gas mains carry large volumes of flammable gas under pressure. If they are ruptured by excavation, corrosion, or ground movement, the escaping gas can accumulate and ignite, leading to powerful explosions.
In standard usage, it almost always refers to pipes for natural gas or town gas (used for heating and cooking). In specific industrial contexts, it could theoretically be used for other distributed fuel gases, but it would typically be specified (e.g., 'propane gas main'). It does not refer to medical gas lines or small-scale laboratory gas lines.
A large underground pipe that is the primary supply line for distributing natural gas or manufactured gas from the source to local service lines that connect to buildings.
Gas main is usually technical / formal in register.
Gas main: in British English it is pronounced /ˌɡæs ˈmeɪn/, and in American English it is pronounced /ˌɡæs ˈmeɪn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this specific technical term]”
Learning
Memory Aids
Mnemonic
Think of the 'MAIN' street in a city—the biggest, most important one. A GAS MAIN is the 'main street' for gas, the biggest, most important pipe that feeds all the smaller ones.
Conceptual Metaphor
ARTERY / LIFELINE (The gas main is an artery carrying the lifeblood (energy) to the body of the city.)
Practice
Quiz
What is the primary function of a 'gas main'?