Definition of Oort, Jan Hendrik in English:

Oort, Jan Hendrik

Line breaks: Jan Hen|drik Oort
Pronunciation: /ɔːt
 
/
( 1900–92), Dutch astronomer. He proved that the Galaxy is rotating, and determined the position and orbital period of the sun within it.

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Word of the day rebuff
Pronunciation: rɪˈbʌf
verb
reject (someone or something) in an abrupt manner…