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

That’s a good sign for SpaceX, which will likely continue to raise capital in the future, primarily by taking on more debt, according to Oppenheimer analysts.

From MarketWatch • Jun. 20, 2026

According to analysts at Oppenheimer, tracking how Tesla spends its cash may provide some insight.

From MarketWatch • Jun. 18, 2026

Last week, Oppenheimer analyst Rick Schafer described the tone as “bullish” in a discussion with Broadcom executives.

From Barron's • Jun. 17, 2026

Noah Kaye, an Oppenheimer senior analyst, has a Buy rating on the shares and a $264 price target, implying 21% upside from its current price of $217.54.

From Barron's • Jun. 17, 2026

As for the plan to build neutron-producing heavy-water reactors, Oppenheimer favored it.

From "Big Science" by Michael Hiltzik