Meaning "not" in phrases taken from Latin and Several other languages, non is a individual term and is not hyphenated: non compos mentis, persona non grata. When need to the prefix "non" be accompanied by a hyphen? Which happens to be right: "a non-polar molecule" or "a nonpolar molecule"? noun https://non97542.vigilwiki.com/6093460/bedrucken_an_overview