What does cyathi mean?
Cyathi is the Latinized plural of cyathus, a word with both an object meaning and a biological one. In its older or literary sense, cyathi means goblets or drinking cups, particularly vessels associated with classical dining or ceremonial drinking. In modern scientific usage, Cyathus is a genus of fungi commonly called bird's-nest fungi, and cyathi denotes multiple members of that genus. Their fruiting bodies resemble miniature nests or cups, and raindrops can activate a splash-cup mechanism that disperses their spore packets. The plural is irregular from an English perspective because it retains the Latin -i ending instead of adding -es. Because cyathi is uncommon outside classical references and specialist mycology, it is most likely to be encountered in dictionaries, literary texts, or formal discussions of fungal taxonomy. Its unusual appearance makes it a useful example of how a classical borrowing can preserve features of its source language while also acquiring a precise modern scientific meaning.
nounThe Latinized plural of cyathus. In literary usage, it means goblets or drinking cups; in biological usage, it refers to multiple members of the fungal genus Cyathus, commonly called bird's-nest fungi.
- Multiple members of the fungal genus Cyathus, commonly called bird's-nest fungi.
- Goblets or drinking cups, especially in classical, literary, or historical usage.
"A row of silver cyathi stood on the banquet table."
"Several cyathi were identified among the leaf litter."
"A row of silver cyathi stood on the banquet table."
Cyathi is itself the conventional Latinized plural of cyathus. The regular English plural cyathuses is possible when referring to cups, but cyathi is standard in classical and biological contexts.
"The excavation uncovered several ornate cyathi near the drinking vessels."
Raindrops turn a bird's-nest fungus into a miniature splash cup, flinging its spore packets into the air.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does cyathi come from?
Cyathi comes through English from Latin cyathus, meaning a cup or goblet, which was borrowed from Ancient Greek kýathos, a drinking vessel. Latin cyathus formed its plural as cyathi, and English retained the Latinized plural when the word was adopted. The same Greek root also underlies botanical terms such as cyathium and cyathiform.
Related word forms
How cyathi is actually used
Rare and highly specialized. The plural retains the Latin -i ending rather than using the regular English -es ending. The goblet sense occurs chiefly in literary or classical contexts, while the fungal sense is most familiar in mycology and taxonomy.