half-width space
Computing term for a space character that occupies half the width of a full-width CJK character. Contrasts with 和字間隔 (full-width space).
See also: 和字間隔
欧文間隔 is also called a half-width space.
In programming, words are separated by half-width spaces.
和字間隔 is a full-width space used in Japanese text, while 欧文間隔 is a half-width space typically used in Western languages and programming.
Compound of 欧文 (European text) and 間隔 (space, interval).