The word vaping isn't in our dictionaries yet because it hasn't been coined yet, to get a new word coined it has to be a word that is used around the world. Which at this point vaping is being used everywhere, or someone who is famous can coin words. vaping isn't considered smoking like smoking cigarettes, It's set apart from cig's all together. It surely doesn't smell like cig's and Vaping doesn't sit and keep burning, So the word Vaping even has a definition for the word. So whoever these people are that record words for our dictionary need to add the word Vaping.
