| Word | Definitions | Synonyms |
|---|---|---|
| calypter | (noun) scalelike structure between the base of the wing and the halter of a two-winged fly | Synonyms: alula |
| calyptra | (noun) the hood or cap covering the calyx of certain plants: e.g., the California poppy | - |
| calyx | (noun) (botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud; usually green | - |