You may wonder what happens behind the scenes when you run a spell check in PowerPoint or any other Microsoft Office program. PowerPoint looks at each word you have typed and matches those words with the entries listed within its dictionary. If it comes across any word that the dictionary does not contain, it goes ahead and marks that word as misspelled. To counter this state of affairs, you can buy several specialized dictionaries — in fact some great dictionaries are also available free of cost.
Learn how to load and use custom dictionaries in PowerPoint 2013 for Windows.

