Popup dictionary with pronunciation v2.2.1
Coming across new words is easy and even knowing its definition. However, memorizing the words that you read doesn't come naturally. You have to work on it.
This extension will ease this job.
It lets you see the definition of a double-clicked word along with its pronunciation. However, this is not a striking feature as couple of other apps do it right now.
You can quickly see all the words that you have looked up each day. Apart from a dictionary app it is also a vocabulary builder. Like other apps it doesn't inundates you with so many words that you have never seen. Memorizing the words for which you have a context will be much easier.