Sitter

Từ điển WordNet v3.1 - WordNet Dictionary

noun

Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)
• Syn:
Willem de Sitter
• Instance Hypernyms:
astronomer, uranologist, stargazer

• Từ đồng nghĩa / Synonyms:
  brood hen, broody, broody hen, setting hen, artist's model, babysitter, baby-sitter, Sitter, Willem de Sitter