Word.ws English Dictionary

Plural of complex

regular plural

The plural of complex is complexes.

Forms of complex

Singularcomplex /ˈkɒmplɛks/
Pluralcomplexes
Countablecountable

Less standard forms: complices (nonstandard).

Complexes in a sentence

  • As of early Wednesday, there were at least 25 major wildfires and fire complexes, the term given to multiple fires in a single geographic area, burning in California, Christine McMorrow, a Cal Fire information officer, said.2020 September 16, “Millions of acres burn in California as weather improves in Northwest.”, in The New York Times, retrieved 16 Sep 2020
  • The interesting aspect here is that U₃ is irreducible, even though all irreps over the complexes are one-dimensional because ℤ₄ is abelian.1996, Barry Simon, Representations of Finite and Compact Groups, page 50
  • Because of their connection with both homology and cohomology, chain complexes are an important topic of study in homological algebra.From the entry homology
  • The earthquake destroyed several apartment complexes.From the entry destroy
  • In the current study we reported a number of lanthanide (+II) complexes with oligosilanyl ligands.2015 July 1, Rainer Zitz et al., “Neutral “Cp-Free” Silyl-Lanthanide(II) Complexes: Synthesis, Structure, and Bonding Analysis”, in…. From the entry oligosilanyl

Meaning of complex

  1. adjective Made up of multiple parts; composite; not simple.
  2. adjective Not simple, easy, or straightforward; complicated.
  3. adjective Having the form a + bi, where a and b are real numbers and i is (by definition) the imaginary square root of −1.

Full definition of complex

Questions about the plural of complex

What is the plural of complex?
The plural of complex is complexes.
Is complex countable?
Complex is a countable noun.
Is complices correct?
complices is marked nonstandard in Wiktionary. The usual plural of complex is complexes.

Source and license

Adapted from Wiktionary: complex (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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