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 curvature is gone at 50mm, and the lens can still focus as close as 11.9 inches at that focal length. —PCMAG, 2 Dec. 2024

The double snake motifs could be seen on the flags his troops were carrying, and the wolf heads could be seen around the curvature of his chariot — all hinting to the true nature of this man. —Jazz Tangcay, Variety, 23 Nov. 2024

Any amount of curvature introduced into the system is going to make the zipper significantly more likely to fail. —Joe Jackson, Outside Online, 17 Oct. 2024

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

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