Diameter

Pronunciation: /daɪˈæmɪtər/

Definitions of diameter

noun a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Example Sentences

A1 The diameter of the circle is 10 centimeters.

A2 To find the diameter of a circle, you need to measure the distance across the center.

B1 The diameter of the Earth is about 12,742 kilometers.

B2 When calculating the diameter of a sphere, you need to double the radius.

C1 The telescope has a large diameter, allowing it to capture more light.

C2 The diameter of the galaxy is so vast that it is difficult to comprehend.

Examples of diameter in a Sentence

formal The diameter of the circle can be calculated by doubling the radius.

informal The diameter of this pizza is huge!

slang Check out the diameter of that burger, it's massive!

figurative The diameter of his influence in the industry is unparalleled.

Grammatical Forms of diameter

• plural: diameters
• comparative: more diameter
• superlative: most diameter
• present tense: diameter
• future tense: will diameter
• perfect tense: have diametered
• continuous tense: is diametering
• singular: diameter
• positive degree: diameter
• infinitive: to diameter
• gerund: diametering
• participle: diametered

Origin and Evolution of diameter

First Known Use: 1250 year

Language of Origin: Greek

Story behind the word: The word 'diameter' originated from the ancient Greek word 'diametros' which means 'measuring across'.

Evolution of the word: Over time, the word 'diameter' has retained its original meaning of a straight line passing through the center of a circle and connecting two points on the circumference. It is commonly used in geometry and mathematics to describe the size of a circle or sphere.