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TOEFL IELTS BNC: 7895 COCA: 11020

optimum

noun

op·​ti·​mum ˈäp-tə-məm How to pronounce optimum (audio)
plural optima ˈäp-tə-mə How to pronounce optimum (audio) also optimums
1
: the amount or degree of something that is most favorable to some end
The substances were mixed in various proportions until an optimum was reached.
especially : the most favorable condition for the growth and reproduction of an organism
The soil condition for this crop is now at an optimum.
2
: greatest degree attained or attainable under implied or specified conditions
This agricultural pest reaches its optimum farther south.
optimum adjective

Example Sentences

The substances were mixed in various proportions until an optimum was reached.
Recent Examples on the Web The optimum would be to toss into the stream of discussion an AI outlier comment that would get everyone to go full-on fissionable red hot. Lance Eliot, Forbes, 10 July 2022 Some of that will now happen regardless, but there’s still scope to fiddle with the optimum at the margins. Trond Arne Undheim, Forbes, 13 Apr. 2022 Buxton showed the optimum of his skills when he was named the American League's Player of the Month this past April. Star Tribune, 8 June 2021 As far as emphasis, every single week, every single day optimum, nothing but our best. James Crepea | The Oregonian/oregonlive, oregonlive, 2 Dec. 2019

Word History

Etymology

borrowed from Latin, from neuter of optimus (earlier optumus) "best," probably originally "foremost, headmost," from ob "toward, in front of" + -tumus, -timus, superlative suffix (going back to Indo-European *-tm̥mos) — more at ob-

Note: Traditionally the initial element op- has been taken as the stem of op-, *ops "power, ability, wealth" (see opus), though superlative derivatives with -(t)imus are regularly formed from spatial prepositions (as extimus, intimus, postumus), not nouns. The inscriptional forms opitimus, opitumus probably contain an epenthetic vowel and hence would not be of etymological relevance.

First Known Use

1848, in the meaning defined at sense 2

Time Traveler
The first known use of optimum was in 1848

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