Definition of supranational
: transcending national boundaries, authority, or interests a supranational authority, regulating ocean usage — N. H. Jacoby
From the M-W Editors
1846
First Known Use of supranational
1846
SUPRANATIONAL Defined for English Language Learners
supranational
play
adjective
Definition of supranational for English Language Learners
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: involving more than one country
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