| Word | Definitions | Synonyms |
|---|---|---|
| redolence | (noun) a pleasingly sweet olfactory property | Synonyms: bouquet, fragrance, fragrancy, sweetness |
| redoubt | (noun) an entrenched stronghold or refuge | - |
| (noun) (military) a temporary or supplementary fortification; typically square or polygonal without flanking defenses | - | |
| redox | (noun) a reversible chemical reaction in which one reaction is an oxidation and the reverse is a reduction | Synonyms: oxidation-reduction, oxidoreduction |