adhesión
adhesion
noun ah-deh-SYOHN Rare
Origin: From Latin adhaesio (a sticking to).
Also means
accession
Usage Note
Adhesión has both a physical sense (the sticking of surfaces) and a formal political/organizational one: adhesión a un tratado (accession to a treaty), adhesión a un partido (joining a party). In everyday speech, apoyo (support) is more natural; adhesión sounds formal or bureaucratic.
Examples
"El país firmó su adhesión al tratado internacional."
Natural Translation
The country signed its accession to the international treaty.

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