Sponsion \Spon"sion\ (-sh[u^]n), n. [L. sponsio, fr. spondere,
sponsum, to promise solemnly.]
1. The act of becoming surety for another.
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2. (Internat. Law) An act or engagement on behalf of a state,
by an agent not specially authorized for the purpose, or
by one who exceeds the limits of authority.
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