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• NEO
  NEO

  abbreviation

  near-earth object.
• neo-
  neo-

  a combining form meaning “new,” “recent,” “revived,” “modified,” used in the formation of compound words.

NEO

¹ American  

abbreviation

1. near-earth object.

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neo- ² American  

1. a combining form meaning “new,” “recent,” “revived,” “modified,” used in the formation of compound words.

   neo-Darwinism; Neolithic; neoorthodoxy; neophyte.

2. Chemistry. a combining form used in the names of isomers having a carbon atom attached to four carbon atoms.

   neoarsphenamine.

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neo- British  

combining form

1. (sometimes capital) new, recent, or a new or modern form or development

   neoclassicism

   neocolonialism

2. (usually capital) the most recent subdivision of a geological period

   Neogene

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Etymology

Origin of neo-

< Greek, combining form of néos; akin to new

Example Sentences

A NEO robot from 1X, meant for home use, can be reserved for $20,000.

From Barron's • Feb. 6, 2026

Norwegian CEO Bernt Børnich says NEO is very useful in his own home, busily hoovering and tidying up after his family, which he says is "a mix" of autonomous action and human-operated.

From BBC • Jan. 11, 2026

NEO Surveyor, in particular, has garnered immovable bipartisan support in recent years.

From Salon • Jan. 28, 2025

Cheng says he hopes future missions, such as NASA’s NEO Surveyor, set to launch in 2027, may be able to find a larger population of lunar debris still orbiting in our neighborhood.

From Science Magazine • Apr. 19, 2024

All our host Were not so fair a prize for him as I. NEO.

From The Seven Plays in English Verse by Sophocles