cyathusEtymologyFrom Latin cyathus, from Ancient Greek κύαθος (kúathos, “ladle”), of uncertain origin. Doublet of kyathos.cyathus means an ancient Roman unit of liquid measure reckoned as the volume of 1⅔ Roman ounce of wine and equivalent to about 45 mL although differing slightly over time. Lexicurio rates it Sui generis — a strength score of 88 out of 100.nounAn ancient Roman unit of liquid measure reckoned as the volume of 1⅔ Roman ounce of wine and equivalent to about 45 mL although differing slightly over time.A ladle, especially (historical) a small one used for serving wine in ancient Greece and Rome.Synonym of kyathos (“an ancient ladle and serving beaker”).