A WikiWord is a word written in such a way as to create a link to a new wiki page.

A WikiWord is any word which contains at least two upper case letters.

This might sound a little clumsy, but the rule is quite easy to apply. It is also called StudlyCaps, CamelCase, BumpyCase or TitleCase.

Most wikis have additional methods for creating links to new pages, such as wrapping text in double square brackets. E.g.: samplenonwikiword?.