Plural of cyathus; ancient Greek drinking cups or cup-shaped structures in organisms.
From Latin cyathus, derived from Greek kyathos meaning 'cup.' The plural form reflects classical Latin nominalization patterns, preserving the original Greek morphology.
Ancient Greeks were so obsessed with wine that they had a specific word for their fancy drinking vessels—and scientists later borrowed the term to describe natural cup-shaped structures in biology, from flower parts to fossil organisms!
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