Meaning of “neo-” in the English Dictionary

"neo-" in English

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uk /niː.əʊ-/ us /niː.oʊ-/

NEOnoun [ C ]

/ˌen.iːˈəʊ/ /ˌen.iːˈoʊ/

abbreviation for near-earth object: an object in space such as an asteroid, comet, or meteoroid that sometimes passes close to the earth:

The earth's atmosphere protects us from NEOs smaller than, say, 50 meters in diameter.

(Definition of “neo-” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)