HyperDic: willem_de_sitter

English > 1 sense of the expression Willem de Sitter:
NOUNperson Willem de Sitter, SitterDutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)
English > Willem de Sitter: 1 sense > noun 1, person
MeaningDutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934).
SynonymSitter
Instance ofastronomer, uranologist, stargazerA physicist who studies astronomy
CatalanWillem de Sitter

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