fixative

noun
1
a substance that is used to prevent colours or smells from changing or becoming weaker, for example in photography, art or the making of perfume
ماده تثبیت‌کننده, تثبیت‌کننده
2
a substance used to preserve biological material, for example before examining it under a microscope
ماده ثابت‌کننده, ثابت‌کننده
an alcoholic fixative
3
a substance that is used to stick things together or keep things in position
چسب, چسباننده, مواد ثابت‌کننده, ماده چسبنده, ثابت‌کننده