Look up the definition of a word in Office
You can quickly look up a word's definition from within any Office application.
Office must be able to connect to the Internet to use Reference Tools. The first time you use Reference Tools you are asked to Click here to allow access to online Reference Tools.
In your document, select the word or phrase that you want to look up.
Click Tools > Dictionary.
If the definition has more than one entry, click the arrow next to the definition that you want to see.
To look up another word or phrase, type it into the Word or Phrase box, and then press RETURN.
To see a list of recent searches, click the arrow next to the magnifying glass in the Word or Phrase box.