block·​chain | \ ˈbläk-ˌchān How to pronounce blockchain (audio) \

Definition of blockchain

: 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 also : the technology used to create such a database The technology at the heart of bitcoin and other virtual currencies, blockchain is an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way. — Marco Iansiti and Karim R. Lakhani

First Known Use of blockchain

2011, in the meaning defined above

Keep scrolling for more

Learn More about blockchain

Statistics for blockchain

Look-up Popularity

Time Traveler for blockchain

The first known use of blockchain was in 2011

See more words from the same year

Comments on blockchain

What made you want to look up blockchain? Please tell us where you read or heard it (including the quote, if possible).


to speak slightingly about or to degrade

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!