NEO
1 Americanabbreviation
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a combining form meaning “new,” “recent,” “revived,” “modified,” used in the formation of compound words.
neo-Darwinism; Neolithic; neoorthodoxy; neophyte.
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Chemistry. a combining form used in the names of isomers having a carbon atom attached to four carbon atoms.
neoarsphenamine.
combining form
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(sometimes capital) new, recent, or a new or modern form or development
neoclassicism
neocolonialism
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(usually capital) the most recent subdivision of a geological period
Neogene
Etymology
Origin of neo-
< Greek, combining form of néos; akin to new
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.
See Examples For:
However, NASA's NEO Surveyor mission, scheduled to launch in 2027, could help solve the mystery.
From Science Daily ● May 14, 2026
He was told his B negative blood-type or NEO blood - was rare and he could help babies in neonatal intensive care.
From BBC ● Apr. 1, 2026
A NEO robot from 1X, meant for home use, can be reserved for $20,000.
From Barron's ● Feb. 6, 2026
At the bare minimum, then, NASA’s ongoing planetary defense work should tick along as planned, with NEO Surveyor continuing to be funded, as well as its ground-based asteroid-questing telescopes.
From Salon ● Jan. 28, 2025
All our host Were not so fair a prize for him as I. NEO.
From The Seven Plays in English Verse by Sophocles
“Democracy in the shape of the Roosevelt coalition was a problem, perhaps the domestic problem for the Hooverites, neo- and paleo- alike,” he writes.
From New York Times ● Feb. 14, 2023
His New State Gallery, furthermore, gets along surprisingly well with the old, an adjacent neo- classic stucco palace built in 1843, because the new building neither clashes with nor detracts from the old.
From Time Magazine Archive
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Feinberg Hall, housing for 40 students, is a scrupulously detailed, 80-ft.-high brick tower wedged between a 1950s dormitory and a neo- Gothic building from the 1920s.
From Time Magazine Archive
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Likewise, babies of women who delay seeking adequate prenatal care are at high risk for birth defects and neo- natal trouble.
From Time Magazine Archive
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The neo- Puritans to-day abuse the rebels, young and old, because they have thrown over dogma and discipline.
From Definitions: Essays in Contemporary Criticism by Henry Seidel Canby
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.