noun, feminine/nɛʒ aʁ.ti.fi.sjɛl/plural: neiges artificielles
a type of water ice based artificial snow produced by snow cannons, where water is sprayed into the bath of a highspeed airstream produced by a highpower high-capacity fan; fake snow; a snow substitute that is not composed of water ice, typically used for decorative purposes, frequently in room temperature environments
Literally, “artificial snow”.