ultrapremium en · ADJ
Etymology
From ultra- + premium.
Meanings
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(not-comparable) At the top end of premium; of the very highest quality.
In their study of the prices of Californian and Washington red wines, Costanigro, Mittelhammer and McCluskey categorize the wines into commercial, semipremium, premium, and ultrapremium.
2018, R. Carter Hill, William E. Griffiths, Guay C. Lim, Principles of Econometrics, page 310: