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I.N.A.O. Institut National des Appellations d'Origine (National Institute for Appellations of Origin) is a public institution that is responsible for establishing and enforcing production requirements for AOC and VDQS wines.

I.T.V. Institut Technique de la Vigne et du Vin (Technical Institute of Grapevines and Wine) is a professional technical institute that conducts research and testing on grapevines and wine.

INSIPID Said of a wine that is unpleasantly sweet with low acidity.