| Word | Definitions | Synonyms |
|---|---|---|
| alkene | (noun) any unsaturated aliphatic hydrocarbon | Synonyms: olefin, olefine |
| cycloalkene | (noun) alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character. | Synonyms: cycloolefin |
| silken | (adjective) having a smooth, gleaming surface reflecting light; being of a smooth, soft and lustrous quality, resembling silk | Synonyms: satiny, silklike, silky, sleek, slick |