Except non is not an english word, it is a prefix of latin origin For more, including variants, see wikipedia Which is why american style manuals will always ask you to merge it with the subsequent word, without a hyphen
Suppose that we want to negate a generic compound adjective adjective1 adjective2 In expressions in which figures and abbreviations (or symbols. Is this phrasing peculiar to american speakers or do british speakers use this expression too
My sense is to imply a minuscule chance, a slim chance, a small chance etc.