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

 

interstellar

 adjective
adjective
BrE BrE//ˌɪntəˈstelə(r)//
 
; NAmE NAmE//ˌɪntərˈstelər//
 
[only before noun] Space travel
 
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between the stars in the sky compare stellar See related entries: Space travel
See the Oxford Advanced American Dictionary entry: interstellar