Back to the Future turned 30 this year. Dictionary.com and Yahoo! are celebrating 20 years in business. Over the past 20 or so years there have been lots of words added to the lexicon. Naturally, many of them have to do with technology. Many of them are what linguists call a “functional shift” which is when a noun becomes a verb or vice versa (i.e. to friend). Others are when a word retains the old meaning but has added another – see the Huffington Post link below. One word that didn’t make that list was the first one that Dotsubbers guessed! That word: Spam.