The numéraire is a real and important concept in economics: the unit of account against which all other values are measured. It’s the anchor that makes prices comparable, and it appears throughout general equilibrium theory, international finance, and monetary economics.
The word is precise, scholarly, and beautiful, and it’s understood immediately by anyone with economics training while remaining pleasantly opaque to everyone else. That’s a good combination for a name aimed at a professional audience.
It fits an economics research organisation, a monetary policy institute, a financial data product, an academic publication, or a think tank. On the .org the research and institute readings are strongest, and economics research bodies use that extension almost universally.
Nine letters, four syllables, French in origin and used identically in English economics literature, no accent required in the domain.
The name is listed for sale. Enquiries welcome.