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📕 rednote ID(小红书号)：3881567312

Cylinder Definition, Examples, and Common Uses (2 meaning)

Meaning 1：tube-shaped solid (cylinder)

cylinder 🔊

/ˈsɪlɪndər/

A three-dimensional shape with round ends and straight sides, like a can or a pillar.

Blue geometric cylinder shape 3D illustration

tube-shaped solid 🔊

➕

/tjuːb ʃeɪpt ˈsɒlɪd/

A three-dimensional shape with two parallel circular bases connected by a curved surface, like a can or a pillar.

📁 Category：School Education 🔖 Level：elementary

📘 Details & Usage

📖 Root Explanation

From Greek 'kylindros' (roller) through Latin 'cylindrus'.

💡 Mnemonic

Cylinder: 'sil' + 'in' + 'der' — think of a 'silly can' that rolls in a line.

📖 Example

During the geometry lesson, the teacher held up a wooden cylinder to show how to calculate its volume. 🔊 During the geometry lesson, the teacher held up a wooden cylinder to show how to calculate its volume.

🔗 Collocations

right circular cylinder – a cylinder with bases perpendicular to its axis

cylinder volume – the amount of space inside a cylinder

cylindrical shape – the form of a cylinder

🔄 Synonyms

tube (n.) – a long hollow object similar to a cylinder

drum (n.) – a cylindrical container or shape

roll (n.) – a cylindrical mass or piece

🚫 Antonyms

sphere (n.) – a round solid shape with no sides

cube (n.) – a solid with six square faces

cone (n.) – a solid with a circular base and pointed top

🌱 Derivatives

cylindrical (adj.) – having the shape of a cylinder

📖 Cultural Story

Etymology from Greek 'kylindros' meaning 'to roll'. Cylinders are fundamental in geometry and engineering, from ancient grain rollers to modern engine chambers.

Meaning 2：engine chamber (cylinder)

cylinder 🔊

/ˈsɪlɪndər/

A part in an engine, usually a hollow metal tube where a piston moves to create power, often found in cars or machines.

Car engine cylinder block with pistons close-up

engine chamber 🔊

➕

/ˈɛndʒɪn ˈtʃeɪmbər/

A hollow cylindrical chamber in an engine where a piston moves up and down, converting fuel energy into mechanical motion.

📁 Category：Technological Inventions 🔖 Level：intermediate

📘 Details & Usage

📖 Example

When the car broke down, the mechanic discovered a crack in one of the engine cylinders that needed repair. 🔊 When the car broke down, the mechanic discovered a crack in one of the engine cylinders that needed repair.

🔗 Collocations

engine cylinder – the cylinder part of an internal combustion engine

cylinder block – the metal casting containing the cylinders

cylinder head – the top cover of the cylinder

🔄 Synonyms

chamber (n.) – an enclosed space within an engine

bore (n.) – the internal diameter of an engine cylinder

barrel (n.) – a cylindrical tube, sometimes used for similar engine parts

🌱 Derivatives

cylindrical (adj.) – relating to the shape of a cylinder