Etymology
The word "cylinder" is derived from the Greek word "kylindros," which itself comes from the verb "kylindrein," meaning "to roll" or "to turn."
Meaning
A cylinder is a three-dimensional shape with two parallel circular bases and a curved surface connecting them. The circular bases are congruent (i.e., they are the same size and shape), and the curved surface is shaped like a continuous and smooth curve, often called the "lateral surface."
Origin
The concept of the cylinder dates back to ancient times, likely first used for practical purposes such as rolling objects or creating cylindrical containers. In mathematics, the definition and properties of cylinders were formally established by Euclid in his "Elements" around 300 BC.
The word "cylinder" first appeared in English in the 14th century, taken directly from the Latin word "cylindrus," which was derived from the Greek "kylindros." Over time, the term has been used in various scientific, engineering, and everyday contexts to describe objects or shapes having a cylindrical form.
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