Hahn

American  

[hahn] / hɑn /

noun

1. Otto, 1879–1968, German chemist: Nobel Prize 1944.

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Hahn British  

/ haːn /

noun

1. Kurt. 1886–1974, German educationalist. During the Nazi era he escaped to Britain, where he founded Gordonstoun School (1935) and helped to establish the Duke of Edinburgh's award scheme

2. Otto (ˈɔto). 1879–1968, German physicist: discovered the radioactive element protactinium with Meitner (1917); with Strassmann, demonstrated the nuclear fission of uranium, when it is bombarded with neutrons: Nobel prize for chemistry 1944

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Hahn Scientific  

/ hän /

1. German chemist who investigated radioactive elements and helped discover several new ones. His research on the irradiation on uranium and thorium with neutrons led to the 1938 discovery of nuclear fission.

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Example Sentences

Los Angeles County Supervisor Janice Hahn on Tuesday wrote a letter to the Federal Aviation Administration urging the agency to investigate the incident.

From Los Angeles Times • Apr. 14, 2026

There were reluctant Americans, too, including Emily Hahn, a free-spirited writer for the New Yorker who fell for Maj.

From The Wall Street Journal • Mar. 10, 2026

“We need a lot more of this, but this will show people that it can be done,” said Hahn, who pushed for the project.

From Los Angeles Times • Mar. 6, 2026

Hahn summarizes the findings this way: "Put simply, it's easier for our brain to take what might seem to be the more complicated route."

From Science Daily • Feb. 20, 2026

Standing by the blackboard in his office at LeConte Hall, attended by his ever-present students, Oppenheimer declared promptly, “That’s impossible,” and proceeded to demonstrate mathematically why Hahn and Strassmann must have been mistaken.

From "Big Science" by Michael Hiltzik