Enough to prevent parting without meeting (6)

I believe the answer is:

quorum

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'meeting' is the definition.
(thesaurus)

I don't understand the remainder of the clue.

(Other definitions for quorum that I've seen before include "Number sufficient for business" , "Min. no. for a meeting" , "Minimum number needed to take decisions" , "Number validating a meeting" , "Minimal number required to conduct business" .)

I've seen this clue in The Globe and Mail.

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