xiii : Idioms & Phrases
factor xiii
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noun in the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clot
fibrinase.
WordNet
gregory xiii
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noun the pope who sponsored the introduction of the modern calendar (1572-1585)
Gregory; Ugo Buoncompagni.
WordNet
leo xiii
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noun Italian pope from 1878 to 1903 who was interested in the advancement of learning and who opened the Vatican secret archives to all scholars
Giovanni Vincenzo Pecci; Gioacchino Pecci.
WordNet
louis xiii
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noun king of France from 1610 to 1643 who relied heavily on the advice of Cardinal Richelieu (1601-1643)