| Word | Definitions | Synonyms |
|---|---|---|
| siphon | (noun) a tubular organ in an aquatic animal (especially in mollusks) through which water can be taken in or expelled | Synonyms: syphon |
| (noun) a tube running from the liquid in a vessel to a lower level outside the vessel so that gravity forces the liquid through the tube | Synonyms: syphon | |
| siphonophore | (noun) a floating or swimming oceanic colony of polyps often transparent or showily colored | - |