| CY | the circulation of cytoplasm within a cell |
|---|---|
| CY | small genus of terrestrial ferns of tropical and subtropical southern hemisphere |
| CY | in more recent classifications superseded by the order Fucales |
| CY | primitive jawless aquatic vertebrate: lampreys |
| CY | primitive aquatic vertebrate |
| CY | a writing implement with a small toothed wheel that cuts small holes in a stencil |
| CY | print with a cyclostyle |
| CY | a mild bipolar disorder that persists over a long time |
| CY | of or relating to or exhibiting cyclothymia |
| CY | a mild bipolar disorder that persists over a long time |
| CY | an accelerator that imparts energies of several million electron-volts to rapidly moving particles |
| CY | genus of epiphytic or terrestrial tropical American orchids |