of or relating to mobile telephones that can operate on two GSM frequency bands
- Dual boot
operating system Any system offering the user the choice of two operation systems (OSes) under which to start a computer. A dual boot system allows the user to run programs for both operating systems on a single computer (though not simultaneously). The term “multiple boot” or “multiboot” extends the idea to more than two OSes. […]
[doo-uh l-kahrb, dyoo-] /ˈdu əlˈkɑrb, ˈdyu-/ adjective, Automotive. 1. (of an engine) equipped with a pair of carburetors.
noun, British. 1. . noun 1. (Brit) a road on which traffic travelling in opposite directions is separated by a central strip of turf, etc US and Canadian name divided highway
noun 1. a person who is a citizen or subject of two or more nations; one having dual citizenship.