pneumatic
adjective
pneu·mat·ic
nu̇-ˈma-tik 
nyu̇-
1
: of, relating to, or using gas (such as air or wind):
a
: moved or worked by air pressure
b(1)
: adapted for holding or inflated with compressed air
(2)
: having air-filled cavities
3
: having a well-proportioned feminine figure
especially
: having a full bust
Synonyms of pneumatic
Examples of pneumatic in a Sentence
a movie star who is remembered mainly as a pneumatic sex symbol of the 1950s
Recent Examples on the Web
Zeng Yaoguang works for a company that makes precision pneumatic tools, which were on display at the chip expo in Shenzhen.
—
John Ruwitch, NPR, 19 Dec. 2025
The system the engineers developed consists of a series of pneumatic tubes that deploy from a pressurized box on one side of a robotic arm, use air pressure to snake under or around a specific object, then rejoin the arm on the other side where they are clamped in place.
—New Atlas, 17 Dec. 2025
But for tests featuring ice balls more than 2 inches in diameter, Smith and his colleagues use a pneumatic cannon that must be loaded by pushing the ice ball deep inside it with a stick—like readying a musket.
—Chris Baraniuk, Wired News, 10 Dec. 2025
In 1799, English mechanical engineer and inventor George Medhurst proposed moving goods through rectangular cast-iron pipes using air pressure, an early form of pneumatic transport.
—Georgina Jedikovska, Interesting Engineering, 3 Dec. 2025
See All Example Sentences for pneumatic
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John Ruwitch, NPR, 19 Dec. 2025
The system the engineers developed consists of a series of pneumatic tubes that deploy from a pressurized box on one side of a robotic arm, use air pressure to snake under or around a specific object, then rejoin the arm on the other side where they are clamped in place.
—New Atlas, 17 Dec. 2025
But for tests featuring ice balls more than 2 inches in diameter, Smith and his colleagues use a pneumatic cannon that must be loaded by pushing the ice ball deep inside it with a stick—like readying a musket.
—Chris Baraniuk, Wired News, 10 Dec. 2025
In 1799, English mechanical engineer and inventor George Medhurst proposed moving goods through rectangular cast-iron pipes using air pressure, an early form of pneumatic transport.
—Georgina Jedikovska, Interesting Engineering, 3 Dec. 2025
See All Example Sentences for pneumatic
Cite this Entry
“Pneumatic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pneumatic. Accessed 26 Dec. 2025.
Copy CitationKids Definition
pneumatic
adjective
pneu·mat·ic
n(y)u̇-ˈmat-ik
1
: of, relating to, or using air, wind, or other gas
2
: moved or worked by air pressure
a pneumatic drill
3
: made to hold or be inflated with compressed air
pneumatic tires
Etymology
from Latin pneumaticus "relating to or using air," from Greek pneumatikos (same meaning), from pneumat-, pneuma "air, breath"
Medical Definition
pneumatic
adjective
pneu·mat·ic
n(y)u̇-ˈmat-ik
: of, relating to, or using gas (as air): as
a
: moved or worked by air pressure
b
: adapted for holding or inflated with compressed air
c
: having air-filled cavities
pneumatic bone
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