Consilience. The fact of ,jumping together, or agreeing; coincidence, concurrence; said of the accordance of two or more inductions drawn from different groups of phenomena. OED online

I don't think this conveys that several concepts are being collated (which I don't like because it often implies a natural order). Rather it would seem to imply that several things mean or imply the same thing.

However, the second meaning for 'collation' in the OED is "The action of bringing together and comparing; comparison.", which might in fact meet Gregor's needs. So maybe I should withdraw my dislike.

martin grube writes:

Date: Tue, 11 Mar 2003 19:26:32 +0100 From: martin grube martin.grube@KFUNIGRAZ.AC.AT To: TDWG-SDD@usobi.org Subject: Re: Correct term

...consilience might serve a plurilingual world... the mail was intended for Gregor, therefore the accidentual German. martin

martin grube wrote:

...

das Wort (engl.) "consilience" oder "consilation" (aus lat. "consilere")