Perfumery fixative is a term used to describe substances that are used to help preserve the scent of a perfume. Two common perfumery fixatives are orrisroot (9 letters) and ambergris (9 letters). Orrisroot is a powder made from the dried rhizomes of certain iris plants, while ambergris is a waxy substance produced in the digestive system of sperm whales. Both of these substances are used to help fix the scent of a perfume, allowing it to last longer on the skin.