出典:Wiktionary
出典:『Wiktionary』 (2026/05/10 03:52 UTC 版)
From its dimensions (4 inches by 4 inches); the 'x' is a substitute for the multiplication symbol ×.
From various combinations of having four-wheel drive, having four wheels, and/or having a four-speed transmission.
4x4 (plural 4x4s)