A word category that has no grammatical use or context outside of being appended to the beginning of a word to give it
extra meaning. In some cases they are referred to as their own words, as when compounded together with specific words, they create no
dictionary word, for example interuniversal, to mean "between universes".
Words that are prefixes are usually followed by a "-" when spoken about in definitions, or mentioned as the word itself and not by its
definition, to denote that it is a prefix.