double-width character; full-width character
Computing term for a character that occupies two standard character widths, as opposed to 半角 (half-width). Commonly used in text formatting and encoding contexts.
On this form, please enter your name using double-width characters.
double-width size (of text)
double-height size (of text)
double-width character; double-size character
Compound of 倍 (double) and 角 (angle/square), referring to the doubled width of the character cell.