cylinder
noun
cyl·in·der ˈsi-lən-dər 
1
a
: the surface traced by a straight line moving parallel to a fixed straight line and intersecting a fixed planar closed curve
b
: a solid or surface bounded by a cylinder and two parallel planes cutting all its elements
especially : right circular cylinder see Volume Formulas Table
2
: a cylindrical body or space: such as
a
: the turning chambered breech of a revolver
b(1)
: the piston chamber in an engine
(2)
: a chamber in a pump from which the piston expels the fluid
c
: any of various rotating members in a press (such as a printing press)
especially : one that impresses paper on an inked form
d
: a cylindrical clay object inscribed with cuneiform inscriptions
cylindered
ˈsi-lən-dərd
adjective 
Example Sentences
the cylinder of a revolver
Recent Examples on the Web The system delivers a 15 percent efficiency gain and is an improvement over earlier cylinder deactivation technologies that offered less granular control of individual cylinders within an engine. 
Roberto Baldwin, Ars Technica, 4 Aug. 2022 Fit with a 190 hp four-cylinder engine developed by Aurelio Lampredi, and beautifully bodied by Carrozzeria Scaglietti, the car was raced by Richard Ginther and François Picard in that year’s 24 Hours of Le Mans but failed to finish. Viju Mathew, Robb Report, 24 Aug. 2022 Of the five adjustable speeds on Italic’s heavily textured cylinder, the lowest made roll-outs after long runs feel more like a trip to the massage therapist than to a medieval dungeon. Gabriela Aoun, Outside Online, 10 Nov. 2021 Barkha Dutt, a columnist at the Washington Post, lost her father to Covid-19 this week after he was ferried to the hospital on a faulty oxygen cylinder. Jessie Yeung, CNN, 29 Apr. 2021 After hanging on the cylinder for a moment, the ball rimmed out. Connor Letourneau, San Francisco Chronicle, 21 Apr. 2021 Unlike with the Colorado, each new Canyon will come equipped with the same 2.7-liter turbocharged four-cylinder engine making 310 horsepower and 430 pound-feet of torque. Jack Fitzgerald, Car and Driver, 11 Aug. 2022 The Dundee Engine Plant will be retooled to become the final assembly location for a new four-cylinder engine for two future hybrid-electric Stellantis models coming to North America, the company announced Monday. Eric D. Lawrence, Detroit Free Press, 2 Aug. 2022 The non-hybrid version of the 2023 CR-V will come with Honda’s ubiquitous 1.5-liter four-cylinder engine. Karl Brauer, Forbes, 12 July 2022 See More
Roberto Baldwin, Ars Technica, 4 Aug. 2022 Fit with a 190 hp four-cylinder engine developed by Aurelio Lampredi, and beautifully bodied by Carrozzeria Scaglietti, the car was raced by Richard Ginther and François Picard in that year’s 24 Hours of Le Mans but failed to finish. Viju Mathew, Robb Report, 24 Aug. 2022 Of the five adjustable speeds on Italic’s heavily textured cylinder, the lowest made roll-outs after long runs feel more like a trip to the massage therapist than to a medieval dungeon. Gabriela Aoun, Outside Online, 10 Nov. 2021 Barkha Dutt, a columnist at the Washington Post, lost her father to Covid-19 this week after he was ferried to the hospital on a faulty oxygen cylinder. Jessie Yeung, CNN, 29 Apr. 2021 After hanging on the cylinder for a moment, the ball rimmed out. Connor Letourneau, San Francisco Chronicle, 21 Apr. 2021 Unlike with the Colorado, each new Canyon will come equipped with the same 2.7-liter turbocharged four-cylinder engine making 310 horsepower and 430 pound-feet of torque. Jack Fitzgerald, Car and Driver, 11 Aug. 2022 The Dundee Engine Plant will be retooled to become the final assembly location for a new four-cylinder engine for two future hybrid-electric Stellantis models coming to North America, the company announced Monday. Eric D. Lawrence, Detroit Free Press, 2 Aug. 2022 The non-hybrid version of the 2023 CR-V will come with Honda’s ubiquitous 1.5-liter four-cylinder engine. Karl Brauer, Forbes, 12 July 2022 See More Word History
Etymology
Middle French or Latin; Middle French cylindre, from Latin cylindrus, from Greek kylindros, from kylindein to roll; perhaps akin to Greek kyklos wheel — more at wheel
First Known Use
1570, in the meaning defined at sense 1a
Phrases Containing cylinder
Kids Definition
cylinder
noun
cyl·in·der ˈsi-lən-dər
: a long round body whether hollow or solid