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

Oppenheimer analyst Ken Wong was also optimistic about the MaintainX deal, seeing operations as a “natural extension’ of Autodesk’s role in the design and building process.

From Barron's • May 29, 2026

Kostas Biliouris, an analyst at Oppenheimer, says investors widely expect results to be published next Tuesday ahead of a major hematology conference.

From The Wall Street Journal • May 28, 2026

Oppenheimer analysts, in a note this month, noted that Costco’s stock has fallen after four out of its last eight quarterly earnings reports.

From MarketWatch • May 28, 2026

Nolan won two Oscars in 2024 for his last release, Oppenheimer, and also is known for films including Dunkirk, Inception, Interstellar and The Dark Knight.

From BBC • May 22, 2026

The GAC had reached the conclusion that the intensified test schedule really was placing insupportable pressure on Los Alamos; sooner or later, Oppenheimer feared, the workload would erode the quality of the lab’s product.

From "Big Science" by Michael Hiltzik