Approximately 3,000 acronyms, abbreviations, technical terms, and slang definitions used ubiquitously and specifically in aviation are presented in a handy, concise, and compact pocket-sized reference. Definitions cross the global spectrum of daily aviation parlance. Navigation, fuel, lubricants, turbines, reciprocating power plants, meterology, aircraft electronics, aircraft types, airframes, aviation safety, and more are represented in this compilation of most essential terms.