The clueless Oxford Dictionary thinks vaping started with the invention of the e-cig in 2003. Fact is vaporization has been a common term in the marijuana world for the last two decades or more.
"The language usage of the word vape and related terms in 2014 has shown a marked increase," says editorial director Judy Pearsall. "Vaping has gone mainstream."
Oxford traces the earliest use of the word to a 1983 article about nicotine vapor.
The term "vape pen" is clearly a marijuana product, as opposed to an e-cig. However, it is true that vaping is now common among tobacco users. There's even a magazine called Vape entirely devoted to nicotine-related products.
Vaporizing marijuana was first written about by Dr. Lunglife in several articles showing how to build a whip-style vaporizer published in 1989 editions of High Times.
Also on Oxford's shortlist of hot 2014 words: budtender.