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Definition of Blast off
1. Verb. Launch with great force. "The rockets were blasted off" 
Definition of Blast off
1. Verb. (idiomatic intransitive) to begin ascent under rocket power ¹
¹ Source: wiktionary.com
|  | 
1. Verb. Launch with great force. "The rockets were blasted off" 
1. Verb. (idiomatic intransitive) to begin ascent under rocket power ¹
¹ Source: wiktionary.com