Circumference

Pronunciation: /sərˈkʌmfərəns/

Definitions of circumference

noun The outer boundary of a circular area; the perimeter of a circle

Example Sentences

A1 The circumference of a circle is the distance around its edge.

A2 To find the circumference of a circle, you can use the formula 2πr.

B1 Measuring the circumference of a circle requires a flexible measuring tape.

B2 Understanding the relationship between the radius and circumference of a circle is key in geometry.

C1 Calculating the circumference of an ellipse is more complex than that of a circle.

C2 The circumference of a sphere can be found using the formula 2πr.

Examples of circumference in a Sentence

formal The circumference of a circle is equal to the diameter times pi.

informal To find the circumference, just double the radius and multiply by pi.

slang The circumference is like the outer edge of a circle, dude.

figurative She felt like she was walking in circles, never getting closer to the circumference of her dreams.

Grammatical Forms of circumference

• plural: circumferences
• comparative: more circumferential
• superlative: most circumferential
• present tense: circumferences
• future tense: will circumference
• perfect tense: has circumferenced
• continuous tense: is circumferencing
• singular: circumference
• positive degree: circumference
• infinitive: to circumference
• gerund: circumferencing
• participle: circumferenced

Origin and Evolution of circumference

First Known Use: 1398 year

Language of Origin: Latin

Story behind the word: The word 'circumference' originated from the Latin word 'circumferentia', which is a combination of 'circum' meaning 'around' and 'ferre' meaning 'to carry'.

Evolution of the word: Over time, the word 'circumference' has retained its original meaning of the boundary or perimeter of a circle or any rounded figure. It has also been extended to refer to the outer boundary of any shape or object.