using the initial parts or first letters of a
name. For example, ABBA, MADD, and OPEC are all acronyms that take the first letter from each word to form a new word. Lesser known acronyms include scuba and laser. The latter examples show that not all acronyms have to be capitalized.Initialism – Also called alphabetism, this is a group of letters, each pronounced separately, used as an abbreviation for a name or expression. Examples include: CD, TV, and UK.
Truncation – This type of abbreviation consists only of the first part of a word. These are most often used when referring to proper titles such as months of the year or days of the week, e.g., Mon., Fri., Apr., Oct.