How To Access Dictionary Definitions While Typing on the Mac
If you’re entering text in an app, and you’d like to see the definition of any of the words you’ve entered, simply click on the word and then press the “Command + Control + D” key combination on your Mac’s keyboard, as seen below:
The meaning and pronunciation of the word will be displayed, as shown below:
Right clicking will also present the option to “look up” the meaning of the word in question. Easy-Peasy!
This also works while you’re viewing text in a browser, just double-click the word to select it, and then press the keyboard combo. Or, you can right-click the word and do the “look up” trick.