How to Quickly look up words in Dictionary app in Mac OS X

In this video, we zoom into a web page of mac related

sites which displays various websites and their links.

The cursor moves over these various titles and stops over

different words, highlighting each word. A small window

pops up displaying the abbreviation,meaning of the word

and the way it is pronounced. Than the page scrolls down

and the cursor moves over each title , highlighting each word.

We see the meaning of each word being displayed in the pop up.

Now we know that this is possible by holding the Command-Control-D keys.