maximum

noun

max·​i·​mum ˈmak-s(ə-)məm 

plural maxima ˈmak-sə-mə  or maximums ˈmak-s(ə-)məmz 

1

a

: the greatest quantity or value attainable or attained

b

: the period of highest, greatest, or utmost development

2

: an upper limit allowed (as by a legal authority) or allowable (as by the circumstances of a particular case)

3

: the largest of a set of numbers

specifically : the largest value assumed by a real-valued continuous function defined on a closed interval

maximum adjective

Synonyms

• max
• most
• utmost

Examples of maximum in a Sentence

achieved the maximum

Recent Examples on the Web

To be considered for team titles, a school must enter a minimum of five and a maximum of seven runners, with the five best scores counting toward the team totals. —Mike Waters, Fort Worth Star-Telegram, 28 Oct. 2025

Melissa is expected to bring rainfall of 15 to 30 inches to portions of Jamaica and additional rainfall of 6 to 8 inches with localized maximum to 12 inches for southern Hispaniola through Wednesday, with storm total local maxima of 40 inches. —Miami Herald Hurricane Bot, Miami Herald, 28 Oct. 2025

The world is currently in the 11-year peak of aurora activity known as solar maximum. —Michael Cappetta, Travel + Leisure, 28 Oct. 2025

His two Mann Act convictions had carried the threat of a combined maximum of 20 years in prison. —Nancy Dillon, Rolling Stone, 27 Oct. 2025

Word History

Etymology

Latin, neuter of maximus biggest — more at maxim

First Known Use

1663, in the meaning defined at sense 1a

Phrases Containing maximum

• maximum likelihood
• maximum occupancy
• maximum security prison

Kids Definition

maximum

noun

max·​i·​mum ˈmak-s(ə-)məm 

plural maxima -sə-mə  or maximums

1

: the highest quantity, value, or development

2

: an upper limit allowed

maximum adjective

Medical Definition

maximum

noun

max·​i·​mum ˈmak-s(ə-)məm 

plural maxima -sə-mə  or maximums

1

a

: the greatest quantity or value attainable or attained

b

: the period of highest, greatest, or utmost development

2

: an upper limit allowed (as by a legal authority) or allowable (as by the circumstances of a particular case)

maximum adjective