OpenEtymology

full-width

UKˌfʊl ˈwɪdθUSˌfʊl ˈwɪdθ

Meaning

1adj

(of a character, especially in digital typography) occupying the same horizontal space as two standard alphanumeric characters.

2adj

(of a layout, image, or element) extending across the entire available horizontal space.

Structure

word structure
1
full
complete
+
2
measurement

Usage

The website's hero image is displayed in full-width format.

When typing in Japanese, you can switch between half-width and full-width characters.

For better readability on mobile, the article uses a full-width layout.

Etymology

The compound "full-width" is a modern English formation from two native Germanic elements. "Full" derives from the Proto-Germanic fullaz, meaning "full," which has a stable history in English denoting completeness. "Width" originates from the Old English adjective wīd ("wide") combined with the abstract noun suffix -þu, creating a term for the quality or measurement of breadth. In contemporary digital and design contexts, the term's literal logic—"complete breadth"—is applied technically to describe characters that occupy a space equivalent to two standard characters (like those in East Asian character sets) or design elements that span an entire container.

Analysis

Structure
full (complete) + width (measurement)=fullcomplete+widthmeasurement

- full: From Old English full, meaning "complete, entire, abundant." It functions as an adjective modifying the noun that follows. - width: From Old English wīdu + the noun-forming suffix -þu (-th), meaning "the measurement or extent of something from side to side." It functions as the head noun in this compound.

Full-width Meaning & Word Parts (full + width) | OpenEtymology