crypto
1 Americannoun
plural
cryptos-
a person who secretly supports or adheres to a group, party, or belief.
adjective
combining form
Usage
What does crypto- mean? Crypto- is a combining form used like a prefix meaning “hidden, secret.” It is used in many scientific, medical, and other technical terms.Crypto- comes from the Greek kryptós, meaning “hidden.” The word crypt also derives from this root. Dig up the connection at our entry for the word.In anatomy, crypto- specifically refers to a crypt in its specialized sense of a “slender pit or recess” or a “small glandular cavity.”What are variants of crypto-?When combined with words or word elements that begin with a vowel, crypto- becomes crypt-, as in cryptitis.
Etymology
Origin of crypto1
First recorded in 1945–50; probably independent use of crypto-; -o
Origin of crypto-1
Combining form representing Greek kryptós hidden. See crypt
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The world’s largest crypto has stabilized following last weekend’s rout, during which the price of Bitcoin dropped under $75,000—its lowest level since April 2025.
From Barron's
Continuing selling by crypto “whales,” who hold large amounts of the digital assets, continued to weigh on the market along with forced liquidations and fragile sentiment, Trade Nation analyst David Morrison said in a note.
More companies followed Strategy’s lead, convinced of crypto’s long-term prospects, and their token purchases helped lift prices even higher.
Late last year, investors began to rotate out of riskier holdings like tech stocks and crypto.
Saylor, long the never-sell-your-bitcoin evangelist, rattled markets by suggesting that his company could sell some of its sizable bitcoin stash or bitcoin derivatives if its mNAV—its enterprise value divided by the value of its crypto holdings—were to drop below one.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.