Prefixes are a group of letters that change the meaning of a word when they are added to the start. Most prefixes mean a similar thing when they're added to different words.

Prefixes are groups of letters that are added to the start of words to change their meaning. Watch this clip to learn more about prefixes. Remember: 'Root words' are the basic words that are used ...

For example, a single quote (') identifies what follows as a descriptive label even if it is a number. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.