Lester Caine wrote: > Paul - what is the guide on 'time-zone' or 'time zone' The preferred style is 'time zone', not 'timezone'. It's hyphenated when needed to avoid ambiguity; e.g., see <http://www.grammar-monster.com/lessons/hyphens_in_compound_adjectives.htm>. Arguably the hyphen could be removed in the case you mentioned.