SINCE 1828
blockchain
noun
block·chain
| \ ˈbläk-ˌchān
\
\
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
Keep scrolling for more
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).
Test Your Vocabulary
Farm Idioms Quiz
-
- What does 'poke' refer to in the expression 'pig in a poke'?
Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Farm Idioms Quiz
Not your children's farm quiz.
Take the quiz -
Up in the Sky: A Quiz
It's a bird? It's a plane? No, I'm really asking. What is it?
Take the quiz -
True or False?
Test your knowledge - and maybe learn something along the way.
Take the quiz -
SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share blockchain
Resources for blockchain