Cryptocurrency might already be the rage of the day, but it just got a whole lot more legitimate.

Among more than 850 new words and definitions added to the Merriam-Webster dictionary this month, some cryptocurrency-related words are making their debut.

The online version of the dictionary will now feature blockchain, defined as “a digital database containing information (such as records of financial transactions) that can be simultaneously used and shared within a large decentralized, publicly accessible network.” The word cryptocurrency itself and the term “initial coin offering” will also be added.