Meaning & use
bi-fold door
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Meaning
nouncountable
A door made of two or more panels that fold together as it opens, often used for closets or room dividers.
Grammar: Countable: you can say a bi-fold door or several bi-fold doors. Use it with a singular verb: The bi-fold door is open.
Patterns
- a bi-fold door
- bi-fold doors
- install a bi-fold door
The closet has a bi-fold door that saves space when it opens.
We replaced the old sliding door with a bi-fold door.
Bi-fold doors are common in small apartments because they fold flat against the wall.
Word forms
| plural | bi-fold doors |
|---|
Common combinations
- bi-fold closet door
- The bi-fold closet door was stuck, so I had to lift it off its track.
- bi-fold door track
- Dust often collects in the bi-fold door track, making it hard to slide.
- install a bi-fold door
- They hired a carpenter to install a bi-fold door in the laundry room.
- wooden bi-fold door
- The wooden bi-fold door matched the rest of the furniture.
Synonyms and how they differ
- folding door
- A more general term for any door that folds; bi-fold door is more specific and usually means a door with two panels that fold in half.
- accordion door
- A door that folds in many sections like an accordion; a bi-fold door typically has just two panels.
Word family
- bi-fold adjective
- Describing something that folds in two parts, as in a bi-fold brochure.
Commonly confused: bi-fold door or bifold?
bi-fold door vs bifold
Bifold is also used for a type of wallet that folds in half. The door sense is usually written with a hyphen: bi-fold door.
Practice
Which sentence uses 'bi-fold door' correctly?
Choose one answer.
The correct answer uses 'bi-fold door' as a countable noun meaning a folding door. Option A has a plural verb with a singular noun; option C uses it as a verb, which it is not; option D treats it as a container or unit, which makes no sense.
Make it your own
Write a sentence using “bi-fold door”, then check it and compare it with the examples above.