hexa·​dec·​i·​mal | \ ˌhek-sə-ˈdes-məl How to pronounce hexadecimal (audio) , -ˈde-sə- \

Definition of hexadecimal

: of, relating to, or being a number system with a base of 16

Keep scrolling for more

Other Words from hexadecimal

hexadecimal noun

Examples of hexadecimal in a Sentence

Recent Examples on the Web The screenshots are other blocks of hexadecimal numbers. Casey Tolan, Curt Devine And Drew Griffin, CNN, 5 Aug. 2021 First, verify a series of transactions on the blockchain and, second, correctly guess a random 64-digit hexadecimal number, called a hash. Eamon Barrett, Fortune, 16 May 2021 Then, a few months later, new Bergsonist EPs began appearing on Bandcamp nearly every Friday, each with its own six-character alphanumeric title, the hexadecimal color code of each recording’s thumbnail cover image. Washington Post, 23 Dec. 2020 Rather than send voters home with a binder full of hexadecimal gibberish, the computer would print the ciphertext as something much smaller: a hash code, much like how a URL is shortened into a Bit.ly. Benjamin Wofford, Wired, 15 Sep. 2020 These are 128-bit numbers, expressed in hexadecimal strings—for instance, 2001:0db8:582:ae33::29. Courtney Linder, Popular Mechanics, 27 June 2020 Currently, a block's hash needs at least around 18 zeros (in its hexadecimal representation) to be accepted by the network—which translates to around 1022 trials to find a valid block. Timothy B. Lee, Ars Technica, 9 July 2019 But all the games included hexadecimal-encoded clues and were based on the same hardware. Sean Gallagher, Ars Technica, 14 Aug. 2018 Decryption relies on a hardcoded 32-byte ASCII hexadecimal alphabet key. Dan Goodin, Ars Technica, 19 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hexadecimal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of hexadecimal

1954, in the meaning defined above

Keep scrolling for more

Learn More About hexadecimal

Time Traveler for hexadecimal

Time Traveler

The first known use of hexadecimal was in 1954

See more words from the same year

Dictionary Entries Near hexadecimal




See More Nearby Entries 

Statistics for hexadecimal

Last Updated

9 Aug 2021

Cite this Entry

“Hexadecimal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hexadecimal. Accessed 18 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on hexadecimal

Nglish: Translation of hexadecimal for Spanish Speakers


Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
True or False

Test your knowledge - and maybe learn something along the way.


Anagram puzzles meet word search.

Love words? Need even more definitions?

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