FIXATIVE
fixative
(noun) a varnish dissolved in alcohol and sprayed over pictures to prevent smudging
fixative
(noun) a compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study
Source: WordNet® 3.1
Noun
fixative (plural fixatives)
A substance that fixes, protects, or preserves.
(perfumery) The components of a perfume that prolong or bolster the notes, and may or may not be the base note itself.
Adjective
fixative (comparative more fixative, superlative most fixative)
Serving to fix or bind.
Source: Wiktionary
Fix"a*tive, n.
Definition: That which serves to set or fix colors or drawings, as a
mordant.
Source: Webster’s Unabridged Dictionary 1913 Edition