Noun | 1. | fixative - a compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study fixing agent, fixer - a chemical compound that sets or fixes something (as a dye or a photographic image) |
2. | fixative - a varnish dissolved in alcohol and sprayed over pictures to prevent smudging varnish - a coating that provides a hard, lustrous, transparent finish to a surface |