# curvature

/ˈkɝvətʃɝ/ (US) · /kˈɜːvətʃɐ/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/curvature
Updated: 2026-05-07

## Definition

the degree to which something is curved or bent. You use this to describe the shape of a line or a surface.

For teachers: the degree or amount of bending in a line, surface, or solid object. Often used in technical contexts to measure the deviation from a flat or straight state.

## Examples

- The curvature of the road makes it dangerous to drive fast.
- Engineers must carefully calculate the curvature of the bridge to ensure it can support the weight of heavy traffic.
- From a high altitude, the subtle curvature of the Earth becomes visible against the darkness of space, proving the planet is not a flat plane.

## Usage notes

- Uncountable when referring to the general property of being curved; countable when referring to a specific mathematical value or instance.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.