An acronym is a type of abbreviation formed from the initial letters of a series of words. For example, the word NASA stands for the National Aeronautics and Space Administration. Acronyms are often used to simplify long names or phrases, making them easier to remember and communicate. Many acronyms have become so common that people use them without thinking about their full meanings. For instance, ASAP means "as soon as possible." Acronyms can be found in various fields, including technology, medicine, and government, helping to streamline communication in everyday conversations and professional settings.