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## Transform Your Vocabulary!

circumference

## IPA:

# Dictionary definition of **circumference**

The distance around the outer boundary of a circular or curved object.

"The **circumference** of the Earth is approximately 40,075 kilometers."

## Detailed meaning of **circumference**

It represents the measurement of the complete perimeter or the total length of the curve that forms the outer edge of a shape. In a circle, the **circumference** is the distance around the entire circular boundary, which is mathematically calculated using the formula 2πr, where "r" represents the radius of the circle. The **circumference** is a fundamental concept in geometry and is used to calculate various properties of circles, such as area and diameter. Beyond circles, the term can also apply to the outer boundary or perimeter of other curved shapes, such as ellipses or ovals. The **circumference** serves as a fundamental measurement that helps define and quantify the size, extent, or distance around the outermost part of a curved object or shape, contributing to the understanding and analysis of geometric figures.

## Example sentences containing **circumference**

1. The **circumference** of a circle can be calculated using the formula 2πr.

2. The runner measured the **circumference** of the track before starting the race.

3. The hula hoop's **circumference** determined whether it would fit around her waist.

4. The tailor took measurements of the client's waist **circumference** for the perfect fit.

5. The archaeologist estimated the **circumference** of the ancient stone circle using advanced technology.

6. The cyclist checked the **circumference** of the bike tire to ensure it was properly inflated.

## History and etymology of **circumference**

The noun '**circumference**' has a straightforward etymology that reflects its geometric concept. It originates from Latin, where 'circum' means 'around' or 'about,' and 'ferre' means 'to carry' or 'to bear.' In essence, '**circumference**' combines these Latin elements to mean 'the distance around' or 'the boundary that carries around' a circular or curved object. This etymology precisely captures the mathematical and geometric nature of the term, emphasizing the idea of measuring the complete path that encircles a circular shape. Thus, the word '**circumference**' has retained its fundamental meaning from its Latin roots and continues to be a crucial concept in geometry and measurement.

## Further usage examples of **circumference**

1. The children marveled at the giant pumpkin's impressive **circumference**.

2. The mathematician explained the relationship between the diameter and the **circumference** of a circle.

3. The swimmer recorded the **circumference** of the swimming pool to track their progress.

4. The surveyor measured the **circumference** of the land to determine its boundaries.

5. The rope's **circumference** was too large to fit through the small opening.

6. The **circumference** of the Earth is about 24,901 miles.

7. She measured the **circumference** of the tree with a tape.

8. Calculate the **circumference** of a circle using π and diameter.

9. The **circumference** of the racetrack is a quarter mile.

10. He estimated the **circumference** of the pizza to be 14 inches.

11. The **circumference** of the hula hoop is perfect for exercise.

12. They marked the **circumference** of the pond for landscaping.

13. To find the area, first measure the **circumference**.

14. A wheel's **circumference** affects its speed and distance.

15. The **circumference** of the tire is essential for safety.

16. The **circumference** of the globe fascinated the explorers.

17. Engineers calculated the **circumference** of the pipeline.

18. The **circumference** of the spiral staircase is impressive.

19. The **circumference** of the planet varies at the equator.

20. She marveled at the intricate **circumference** of the nautilus shell.

21. Estimate the **circumference** of the circular swimming pool.

22. The **circumference** of the carousel mesmerized the children.

23. The **circumference** of the moon is much smaller than Earth's.

24. The **circumference** of the bracelet fits perfectly on her wrist.

25. Measuring the **circumference** accurately is crucial in geometry.

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Suffix -ence, TOEFL 2, Boundaries and Limits, Conservation and Protection, Shape and Form

circuit,outline,perimeter,periphery

boundary,brink,circuitry,compass,edge,girth,loop,rim

**Synonyms for circumference**

## Quiz categories containing **circumference**

perimeter, center, core, middle

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