Definition

A three-dimensional shape with two circular ends and straight sides, or an object that has this shape.

Example

The engineer designed a cylinder to hold the hydraulic fluid.

Conversation

Have you ever seen a giant cylinder at the science museum?

Yeah, I remember that! It was so cool to look at.

I wonder how they make those huge cylinders for exhibits.

It must be amazing to design something that big!

Synonyms & Antonyms

Root Explanation

Cylinder → It is formed from "cylindrus" (from Greek "kyllindros", meaning roller) and the suffix "-er" (indicating an object or instrument). The word "cylinder" refers to a three-dimensional geometric shape that resembles a rolled-up tube or roller.

Memory Tip

Imagine a shape that looks like a rolling tube — that's what a cylinder is, derived from the Greek word for roller.

Visually Confused Words