Noun sir john herschel has 1 sense
  1. Herschel, John Herschel, Sir John Herschel, Sir John Frederick William Herschel - English astronomer (son of William Herschel) who extended the catalogue of stars to the southern hemisphere and did pioneering work in photography (1792-1871)
    --1 is a kind of astronomer, uranologist, stargazer
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