Oppenheimer

American  

[op-uhn-hahy-mer] / ˈɒp ənˌhaɪ mər /

noun

1. J(ulius) Robert, 1904–67, U.S. nuclear physicist.

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Oppenheimer British  

/ ˈɒpənˌhaɪmə /

noun

1. J ( ulius ) Robert. 1904–67, US nuclear physicist. He was director of the Los Alamos laboratory (1943–45), which produced the first atomic bomb. He opposed the development of the hydrogen bomb (1949) and in 1953 was alleged to be a security risk. He was later exonerated

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Oppenheimer Scientific  

/ ŏp′ən-hī′mər /

1. American physicist who directed the Los Alamos, New Mexico, laboratory during the development of the first atomic bomb (1942–1945). After World War II, he became an advocate for the peaceful use of atomic energy and opposed the development of the hydrogen bomb.

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Example Sentences

See Examples For:

Oppenheimer

Though Intuitive posted both higher 2Q profits and sales, Oppenheimer says the company is likely to face competition from homegrown Chinese systems and its shift to extended use instruments is bound to pressure FY27 growth.

From The Wall Street Journal ● Jul. 17, 2026

However, Oppenheimer enjoyed a huge audience boost from the Barbenheimer phenomenon, the 2023 viral trend that prompted movie fans to buy tickets to see Barbie and Oppenheimer on the same day.

From BBC ● Jul. 15, 2026

Oppenheimer analyst Christ Kotowski wrote in an early note to clients that with the bank’s revenue rising 14.6% and expenses just 8.4% “all was good on the efficiency front.”

From MarketWatch ● Jul. 14, 2026

Looking at next year, Oppenheimer sees higher earnings growth, including for Goldman and Morgan Stanley, as U.S. banks take a larger share of global investment banking.

From Barron's ● Jun. 30, 2026

Robert Oppenheimer was destined to become the most prominent victim of the witch hunt.

From "Big Science" by Michael Hiltzik