pneumatic
nyoo-MAT-ik
/njuːˈmæt.ɪk/
Operated by air pressure; containing or operated by gas or compressed air.
Describes systems that use pressurized gas to transmit power, known for being fast, clean, and slightly bouncy/compliant compared to rigid hydraulics.
The story behind the word. Derived from the Greek word pneuma, meaning 'breath' or 'wind'. In ancient Greek philosophy, pneuma was the vital breath of life. Over the centuries, scientists shifted the word from spiritual breath to physical air pressure, leading to the modern industrial term.
Word relationships
- air-powered: Air-powered is the common lay term, while pneumatic is the formal engineering designation.
- hydraulic: Hydraulic systems use pressurized liquid, whereas pneumatic systems use pressurized gas.
Commonly confused with
- hydraulic: Hydraulic systems use incompressible liquids (like oil) for high force and rigidity, while pneumatic systems use compressible air for speed and compliance.
Word family
- pneumatics (noun): The branch of technology that deals with the mechanical properties of gases.
- pneumatically (adverb): By means of compressed air or gas.
Collocations
- pneumatic drill
- pneumatic system
- pneumatic actuator
- pneumatic tube
Example sentences
- "The assembly line uses pneumatic cylinders to rapidly sort packages into different bins." A description of factory automation.
- "Workers used a pneumatic jackhammer powered by a large air compressor outside." An article on construction tools.
Memory hook
The 'P' is silent, but think of 'pneumonia' (a disease of the lungs/airways) to remember that pneumatic is all about air. Pneumatic = Powered by air.
When not to use
Do not confuse with hydraulic, which specifically refers to systems operated by pressurized liquids (like oil or water).
Fun facts
- In the late 19th and early 20th centuries, major cities like New York and Paris had massive networks of underground pneumatic tubes to send mail rapidly between post offices.
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