English noun: reductant | |||
| 1. | reductant (substance) a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver | ||
| Synonyms | reducer, reducing agent | ||
| Broader (hypernym) | chemical agent | ||
| Narrower (hyponym) | hydrazine | ||