quadratic

adjective

qua·​drat·​ic kwä-ˈdra-tik 

: involving terms of the second degree at most

quadratic function

quadratic equations

quadratic noun

quadratically

kwä-ˈdra-ti-k(ə-)lē 

adverb

Examples of quadratic in a Sentence

Recent Examples on the Web

Latent growth curve analyses indicated that self-esteem follows a quadratic trajectory across the adult life span, increasing during young and middle adulthood, reaching a peak at about age 60 years, and then declining in old age. —Razib Khan, Discover Magazine, 2 Apr. 2010

And of course, quadratic reciprocity crops up repeatedly within number theory. —Quanta Magazine, 1 Nov. 2023

The shape provides ample stability, with quick edge control and a tapered linear quadratic sidecut that encourages easy transitions and reliable grip. —Nathan Borchelt, Travel + Leisure, 21 Dec. 2023

Moreover, the waitresses' tips varied with age in a negative, quadratic relationship, increased with breast size, increased with having blond hair, and decreased with body size. —Discover Magazine, 19 Nov. 2019

Word History

First Known Use

1668, in the meaning defined above

Phrases Containing quadratic

• quadratic equation
• quadratic form
• quadratic formula

Kids Definition

quadratic

1 of 2 adjective

qua·​drat·​ic

kwä-ˈdrat-ik

: involving or consisting of terms in which no variable is raised to a power higher than 2

a quadratic expression

a quadratic function

quadratic

2 of 2 noun

: a quadratic polynomial or equation