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fullwidth

adjective

fullwidth is an adjective meaning “Of a text character, occupying the space of two alphanumeric characters in a monospace font, or two "normal" text columns” (English Wiktionary, September 2026). It is spelled F-U-L-L-W-I-D-T-H, and it appears about once in every 91 million words in written English (wordfreq, 2021 data).

What does fullwidth mean?

adjective

  1. 1

    Of a text character, occupying the space of two alphanumeric characters in a monospace font, or two "normal" text columns.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of fullwidth

  • full-width

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is fullwidth?

Fullwidth appears about once in every 91 million words in written English, the 305,310th 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).

Fullwidth in Spanish, French, German and Portuguese

In the sense occupying two columns on a traditional text display:

LanguageWords
Frenchpleine chasse
Germanvollbreit

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does fullwidth come from?

From full + width, as a calque of Japanese 全角 (zenkaku).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).