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English Dictionary - With Multi-Lingual Search Your Query of 'Oort cloud' Resulted in 1 Matches Displaying Items 1 through 1 Definitions Oort cloud noun  (astronomy) A roughly spherical region of space from 50,000 to 100,000 astronomical units (approximately 1 light year) from the sun; supposedly the source of most comets. Translations:  Dutch: Oortwolk German: Oortsche Wolke (trans-mid) (trans-bottom) Etymology: Named after w:Jan Oort, Jan Oort.        Find:   Words Starting With:   Words Ending With:   Words Containing:   Words That Match:    Translate Into:    Dutch   French   German    Italian   Spanish Browse the Dictionary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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