Based on Research by TBI Model Systems. 1  Your vision is important for many aspects of life. 2  Traumatic brain injury (TBI) can cause problems with your vision.  Treatment can either fix the problem completely, improve your vision, or help you better manage the problem.
Grammar. 1  InitialsAn initial is the first letter of a word. We often use initials to refer to the names of countries and organisations: â¦. 2  AcronymsAcronyms are words which are formed from the first letters of other words, and which are pronounced as full words. Examples of acronyms: â¦. 3  Abbreviations, initials and acronyms â¦.
A contraction is an abbreviation, but an abbreviation is not necessarily a contraction. However, normally, acronyms are regarded as a subgroup of abbreviations. Abbreviations can also be used to give a different context to the word itself, such as PIN Number.iktionary (0.00 / 0 votes) Rate this definition: abbreviation (Noun). A shortened or contracted form of a word or phrase, used to represent the whole: Dr. abbreviation (Noun). The act or result of shortening or reducing.