enfleurage
noun
en·fleu·rage ˌäⁿ-ˌflər-ˈäzh 
: a process of extracting perfumes by exposing absorbents to the exhalations of flowers
Word History
Etymology
French, from enfleurer to saturate with the perfume of flowers, from en- en- entry 1 + fleur flower, from Old French flor — more at flower
First Known Use
1855, in the meaning defined above