blockchain

noun

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

Examples of blockchain in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
From machine learning and blockchain to revenue diversification, working capital optimization and beyond, there are many types of initiatives that companies can invest in to help build their resilience through uncertainty. Pj Bain, Forbes.com, 25 July 2025 The analyst also pointed out that there is a cap to the number of blockchain integrations Circle can complete from here, further limiting the stock's upside. Lisa Kailai Han, CNBC, 22 July 2025 In June 2021, Sun — the billionaire founder of the blockchain platform Tron — won an auction for a seat aboard Blue Origin's first-ever crewed spaceflight. Mike Wall, Space.com, 22 July 2025 Entrepreneurs are building new financial infrastructure based on permissionless blockchains. Wale Ayeni, semafor.com, 14 July 2025 See All Example Sentences for blockchain

Word History

First Known Use

2011, in the meaning defined above

Time Traveler
The first known use of blockchain was in 2011

Browse Nearby Words

Cite this Entry

“Blockchain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blockchain. Accessed 29 Jul. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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