Highlight a word in browser and right click for word pronunciation?

Reading a web page, not sure how a word is pronounced so highlight the word and an automated icon appears, click on it and then select the speaker (pix of loud haler) and the word is pronounced in the Queens English. I had this in my browser, you could also right click the highlighted word and the option of pronunciation of the word or translation of the word would be available. Just one day, weeks ago it suddenly was gone. I don't remember how I obtained this pronunciation feature originally but I'd really like it back.

Thanks in advance for your help. MT