neo-

From Ancient Greek νέος (néos, “new, young”).

neo-

1. new. (Often used to form clade or taxonomic names indicating more recent branching than a morphologically or otherwise similar group.)

From Ancient Greek prefix νεο- (neo-), from νέος (néos, “new, young”).

• (Received Pronunciation) IPA^(key): /ˈniːəʊ/

• Audio (Southern England):

  (file)

• (General American) IPA^(key): /ˈnioʊ/

neo-

1. new
2. contemporary
3. (organic chemistry) Having a structure, similar to that of neopentane, in which each hydrogen atom of a methyl group has been replaced by an alkyl group
4. (organic chemistry) Being a newly-discovered or -synthesized variant of an existing compound
5. (surgery, especially of genitals) surgically created

   ‎neo- + ‎penis → ‎neopenis

   ‎neo- + ‎labia → ‎neolabia

• (new): ceno-, nov-

• paleo-
• proto-

• -one, EON, NOE, Noe, eno-, eon, one

Borrowed from Ancient Greek νεο- (neo-, prefix), from νέος (néos, “new, young”).

• IPA^(key): (Central) [ˌne.u]
• IPA^(key): (Balearic, Valencia) [ˌne.o]

(attracts secondary stress)

neo-

1. neo-, new

   Antonym: paleo-

• “neo-”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026

• Audio:

  (file)

neo-

1. neo-

Internationalism (see English neo-), ultimately from Ancient Greek νέος (néos).

• IPA^(key): /ˈneo-/, [ˈne̞o̞-]

neo-

1. (chiefly in loanwords) neo-

• (especially before native words): uus-

• eno

Borrowed from Ancient Greek νεο- (neo-, prefix), from νέος (néos, “new, young”).

neo-

1. neo-, new

   Antonym: paleo-

• “neo-”, in Dicionário Estraviz de galego (in Galician), 2014–2026

Ancient Greek νέος (néos, “new, young”)

• Audio (Germany (Berlin)):

  (file)

neo-

1. neo-

Nouns with this prefix are capitalized, just like other nouns in German.

From Ancient Greek νέος (néos, “new, young”).^[1]

• IPA^(key): [ˈnɛo]

neo-

1. neo-

From Ancient Greek νεο- (neo-), from νέος (néos, “new, young”).

• IPA^(key): /nɛ.ɔ/
• Hyphenation: neo

neo-

1. neo-
   1. new
   2. contemporary
   3. (organic chemistry) having a structure, similar to that of neopentane, in which each hydrogen atom of a methyl group has been replaced by an alkyl group
   4. (organic chemistry) being a newly-discovered or -synthesized variant of an existing compound

• “neo-”, in Kamus Besar Bahasa Indonesia [Great Dictionary of the Indonesian Language] (in Indonesian), Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016

From Ancient Greek νεο- (neo-), from νέος (néos, “new, young”).

neo-

1. neo-

• (before native words): nua-

neo-

1. neo-

• -one, Eno, Noè, eno-

From Ancient Greek νέος (néos, “new, young”).

neo-

1. neo-

• “neo-” in The Bokmål Dictionary.

From Ancient Greek νέος (néos, “new, young”).

neo-

1. neo-

• “neo-” in The Nynorsk Dictionary.

Derived from Ancient Greek νεο- (neo-), from νέος (néos).

• IPA^(key): /nɛ.ɔ/

• Audio:

  (file)

• Rhymes: -ɛɔ
• Syllabification: ne‧o-

neo-

1. neo- (new)
2. neo- (contemporary)

   Synonym: współ-

• neo- in Polish dictionaries at PWN

neo-

1. neo- (indicates novelty, newness)
2. forms demonyms corresponding to placenames that contain novo or nova (“new”)

   Nova Zelândia (“New Zealand”) → neozelandês (“New Zealander”)

• novo

• “neo-”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “neo-”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

From Old Irish nem- (compare Irish neamh-, Manx neu-).

neo-

1. un-

• mì-
• eu-
• do-

Borrowed from Ancient Greek νεο- (neo-, prefix), from νέος (néos, “new, young”).

neo-

1. neo-

• “neo-”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025

neo-

1. neo-

• ny-

• neo- in Svensk ordbok (SO)
• neo- in Svenska Akademiens ordlista (SAOL)
• neo- in Svenska Akademiens ordbok (SAOB)