Zwicky

American

[tsvik-ee] / ˈtsvɪk i /

noun

Fritz 1898–1974, Swiss astrophysicist, born in Bulgaria, in the U.S. after 1925.

Zwicky British

/ ˈtsvɪkɪ /

noun

Fritz. 1898–1974, Swiss astronomer and physicist, working in the US from 1925; noted for his study of supernovae

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Zwicky

In the early 1930s, Swiss astronomer Fritz Zwicky noticed that many galaxies were moving far faster than their visible mass should permit.

From Science Daily ● Nov. 29, 2025

In 2019, a routine observation by the Zwicky scope noticed a previously unheralded quiescent galaxy called SDSS1335+0728, 300 million light-years away, suddenly brighten.

From Science Magazine ● Jun. 17, 2024

It was picked up by the Zwicky Transient Facility at Caltech.

From Slate ● Aug. 5, 2023

Janus was spotted using the Zwicky Transient Facility at Caltech's Palomar Observatory near San Diego, with subsequent observations made by other ground-based telescopes.

From Reuters ● Jul. 21, 2023

The term supernova was coined in the 1930s by a memorably odd astrophysicist named Fritz Zwicky.

From "A Short History of Nearly Everything" by Bill Bryson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023