This page in a nutshell: If you are using a term that is not familiar to the article's target audience, or which is used with an inusual or potentially ambiguous meaning, you have to include a brief explanation of the term in the same article. A wikilink to the definition is not a substitute for that explanation.
Linking the words to relevant articles can be considered, but this forces the reader to jump back-and-forth among articles to get a fair sense of the meaning. Furthermore, links serve a better purpose as additional readings for enlightenment, rather than required readings for explanation. Writing the sentences with commonly used terminology and excluding jargon would be a better solution.