What is another word for bi fold?
Pronunciation: [bˈa͡ɪ fˈə͡ʊld] (IPA) 
There are a number of synonyms for "bi fold" that are commonly used in interior design and architecture. One of the most common is "accordion door", which refers to a folding door that compresses in a zig-zag pattern when folded. Another term that is often used is "folding door", which is more general and can refer to any type of door that is designed to fold rather than swing open.
Other synonyms for "bi fold" include "concertina door", which is similar to an accordion door but has a more refined appearance, and "bi-fold partition", which is typically used to separate rooms or create temporary spaces. Finally, "sliding door" may also be considered a synonym for "bi fold", as both types of doors are designed to save space by folding or sliding out of the way when not in use.
