Thank you for that helpful post Weile. Trouble is all the web dictionaries seem to be concerned with American spelling, just as the Microsoft spell checker is (even when one specifies British English) so I need a proper dictionary. Thinking about it I also need a thesaurus. Remember that the official language of Belize is British English, not the American version.
I have never got to grips with the phonetic pronunciation guide given in most dictionaries, including the OED. So from them I wouldn't have a clue how to pronounce tomato or potato.