Definition of extrasolar adjective from the Oxford Advanced Learner's Dictionary

 

extrasolar

 adjective
adjective
BrE BrE//ˌekstrəˈsəʊlə(r)//
 
; NAmE NAmE//ˌekstrəˈsoʊlər//
 
[usually before noun](specialist)
 
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(of a planet, etc.) located outside our solar system
See the Oxford Advanced American Dictionary entry: extrasolar