near-earth object.
a combining form meaning “new,” “recent,” “revived,” “modified,” used in the formation of compound words:
neo-Darwinism; Neolithic; neoorthodoxy; neophyte.
Chemistry. a combining form used in the names of isomers having a carbon atom attached to four carbon atoms:
combining form
(sometimes capital) new, recent, or a new or modern form or development: neoclassicism, neocolonialism
(usually capital) the most recent subdivision of a geological period: Neogene

See near-Earth object

word-forming element meaning “new, recent,” used in a seemingly endless number of adjectives and nouns, mostly coined since c.1880, from Greek neo-, comb. form of neos “new, young, youthful; fresh, strange; lately, just now,” from PIE root *newo- (see new).

neo- pref.

newborn (from “neonate”)


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