DMG

DMG is an acronym used in different domains to refer to several distinct terms. It commonly denotes a macOS disk image file format, a core rulebook in the Dungeons & Dragons role-playing game, a chemical ligand, and a global machine tool brand. The exact meaning depends on the context.

Disk image file: In computing, DMG refers to a macOS disk image file. Files with the .dmg extension package software, documents, or installers into a single archive that can be mounted as a virtual disk on macOS. DMG images can be compressed and encrypted, and they are frequently used for software distribution and backups. They can be opened by Disk Utility or mounted directly in Finder.

Dungeon Master’s Guide: In the Dungeons & Dragons role-playing game, DMG stands for the Dungeon Master’s Guide, one of the game’s core books. It provides guidance for game masters on adventure design, encounter balance, treasure and magic item creation, nonplayer character statistics, and optional rules. Editions of the DMG align with corresponding editions of the game.

Dimethylglyoxime: In chemistry, DMG denotes dimethylglyoxime, a chelating agent used in qualitative and quantitative nickel testing. It forms a characteristic complex with nickel ions, aiding analytical procedures and some industrial processes. DMG is encountered in laboratory settings and certain test kits.

DMG MORI: In manufacturing, DMG MORI is a global machine tool company formed from the merger of Deckel-Maho-Gildemeister (DMG) and Mori Seiki. The brand produces CNC milling and turning machines and serves a wide range of industries, including automotive, aerospace, and general engineering.