An expanded definition is an important writing tool you will need if you are writing for a person who is not an expert or specialist in a particular subject. An expanded definition explains a complex or unfamiliar term to make it easier to understand which is important to effective communication. An extended definition may explain the word's etymology or historical roots, describe sensory characteristics of something (how it looks, feels, sounds, tastes, smells). It also may identify its parts, indicate how something is used, or even explain what it is not. It may provide an example of it, and/or note similarities or differences between words or things.
