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Definition of Glenn
1. Noun. Made the first orbital rocket-powered flight by a United States astronaut in 1962; later in United States Senate (1921-).
Exact synonyms: John Glenn, John Herschel Glenn Jr.
Generic synonyms: Astronaut, Cosmonaut, Spaceman, Senator
Generic synonyms: Astronaut, Cosmonaut, Spaceman, Senator
Medical Definition of Glenn
1. William W., *1914. See: Glenn shunt. (05 Mar 2000)