curvature

noun

cur·​va·​ture ˈkər-və-ˌchu̇r 

-chər,

-ˌtyu̇r,

-ˌtu̇r

1

: the act of curving : the state of being curved

2

: a measure or amount of curving

specifically : the rate of change of the angle through which the tangent to a curve turns in moving along the curve and which for a circle is equal to the reciprocal of the radius

3

a

: an abnormal curving (as of the spine)

b

: a curved surface of an organ

Synonyms

• angle
• arc
• arch
• bend
• bow
• crook
• curve
• inflection
• turn
• wind

Examples of curvature in a Sentence

The lenses have different curvatures.

the curvature of the earth

The machine measures the eyeball's degree of curvature.

a disease that can cause curvature of the spine

Recent Examples on the Web

The precisely contoured shell shape provides a very close fit through the instep, ankles, and heel, but with enough curvature to encompass—rather than crush—bony protrusions. —Outside Editors, Outside Online, 11 Nov. 2024

Mass and space interpenetrate, as do right-angle construction and spatial curvature. —Christopher Knight, Los Angeles Times, 13 Aug. 2024

Samsung refined their outward design with a flatter profile and less curvature around the corners and edges while making internal room for better cooling properties. —Wes Davis, The Verge, 10 July 2024

The vibe’s deep curvature separates it from others on our list—plus, it’s made with medical-grade silicone that’s easy to clean and safe for both internal and external use, as SELF previously reported. —Sarah Madaus, SELF, 10 July 2024

Word History

First Known Use

1603, in the meaning defined at sense 1

Phrases Containing curvature

• center of curvature
• radius of curvature

Kids Definition

curvature

noun

cur·​va·​ture ˈkər-və-ˌchu̇(ə)r 

-chər

1

: the act of curving : the state of being curved

2

: an abnormal curving

curvature of the spine

Medical Definition

curvature

noun

cur·​va·​ture ˈkər-və-ˌchu̇(ə)r, -chər, -ˌt(y)u̇(ə)r 

1

: an abnormal curving (as of the spine) see kyphosis, scoliosis

2

: a curved surface of an organ (as the stomach) see greater curvature, lesser curvature