variants: or before a vowel ne-

Definition of neo-

1a : new : recent Neogene
b : new and different period or form of Neoplatonism : in a new and different form or manner Neoplatonic
c : New World Nearctic Neotropical
d : new and abnormal neoplasm
2 : new chemical compound isomeric with or otherwise related to (such) a compound neostigmine

History and Etymology for neo-

borrowed from Greek neo-, combining form from néos "young, fresh, new" — more at new entry 1

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Cite this Entry

“Neo-.” Dictionary, Merriam-Webster, Accessed 7 May. 2021.

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