A perfumery term referring to a substance added to a perfume blend to absorb and preserve more fugitive scents.
A material that slows down the rate of evaporation of the more volatile components in a perfume composition.
A chemical used in the preparation of samples on slides.
A chemical agent, e.g. alcohol or osmium tetroxide, used for the preservation and hardening of tissues for microscopical study.
A substance that firms or makes rigid.
A chemical substance, like formaldehyde, is employed to harden and preserve tissue specimens before they are subjected to microscopic analysis.