bifold
adjective, noun
bifold is an adjective meaning “Twofold, double” (English Wiktionary, September 2026). It is spelled B-I-F-O-L-D, and it appears about once in every 13 million words in written English (wordfreq, 2021 data).
What does bifold mean?
adjective
- 1
Twofold, double.
- 2
Of two kinds.
O madneſſe of diſcourſe, / That cauſe ſets vp with and againſt it ſelfe, / By-fould authority : where reaſon can reuolte / Without perdition, and loſſe aſſume all reaſon, / Without reuolt.
noun
- 1
A door, window, shutter, or divider consisting of two equal panels hinged together so that it opens by folding the panels against each other.
- 2
A sheet of paper or cardboard folded in half along a crease down the center.
- 3
A wallet, billfold, or carrying case with a single fold, so that it opens like a book.
- 4
A crease or turn that causes something to double back on itself.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of bifold
- bifolds plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is bifold?
Bifold appears about once in every 13 million words in written English, the 109,062nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Where does bifold come from?
From bi- + -fold.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).