Word.ws English Dictionary

How to use complex in a sentence

40 example sentences · adjective, noun, verb

Complex means made up of multiple parts; composite; not simple. Example: “The human body is a complex system made up of many layers.”

Examples of complex by meaning

adjectiveMade up of multiple parts; composite; not simple.

  • a complex being; a complex idea
  • The human body is a complex system made up of many layers.

adjectiveHaving the form a + bi, where a and b are real numbers and i is (by definition) the imaginary square root of −1.

  • function of a complex variable

adjectiveWhose coefficients are complex numbers; defined over the field of complex numbers.

  • complex algebraic variety

nounA collection of buildings with a common purpose, such as a university or military base.

  • In 2148, prospectors working near Deseado Crater discovered an underground complex: a Prothean observation post.2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, →ISBN, →OCLC, PC, scene: Protheans: Mars Ruins Codex entry
  • A man at the complex said he had seen the often heavily made-up girls coming and going in luxury vehicles.2021 February 6, The Courier-Mail, Brisbane, page 4, column 1

nounA cluster of wildfires burning in the same vicinity.

  • The fire complex began as two separate fires.
  • 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

nounA group of closely related species, often distinguished only with difficulty by traditional morphological methods.

  • Since then, a good deal of research has documented and concluded that the nominal species A. fraterculus actually comprises an unresolved complex of cryptic species.2015 November 26, Mosè Manni et al., “Relevant genetic differentiation among Brazilian populations of Anastrepha fraterculus (Diptera...

nounA group of emotionally charged ideas or mental factors, unconsciously associated by the individual with a particular...

  • Jim has a real complex about working for a woman boss.

nounA structure consisting of a central atom or molecule weakly connected to surrounding atoms or molecules, as for example...

  • The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom.2013 September-October, Katie L. Burke, “In the News”, in American Scientist

More sentences with complex

  • Federal policy is constructed in complex ways, involving legislation, regulation, and lobbying.From the entry policy
  • The total cost of the new complex was an estimated $1.5 million.From the entry cost
  • The set of complex numbers constitutes a field extension of degree 2 over the real numbers.From the entry degree
  • His betrayal was the beginning of a complex intrigue intended to give him control of the company.From the entry intrigue
  • Cellulose, starches, and complex carbohydrates, such as glycogen, are common polysaccharides in biology.From the entry polysaccharide
  • Practicing expository writing will teach you to explain complex concepts clearly.From the entry expository
  • A program as complex as the Space Shuttle program takes some time to wind down.From the entry wind down
  • The puzzlement caused by the complex system led to great anger.From the entry puzzlement
  • The bottom-of-the-line patterns don't have complex designs, which are harder to make.From the entry bottom of the line
  • He tied a complex knot so that others would find it hard to undo.From the entry so that
  • All good communicators try to use popular, well-understood examples to put across complex ideas.From the entry put across
  • Each face of the complex Catalan solid exhibits a distinctly deltoidal geometric boundary.From the entry deltoidal
  • I first heard of the Electra complex when I was studying psychology.From the entry hear of
  • Such a complex case requires a multitherapy treatment plan and a multidisciplinary mindset.From the entry multitherapy
  • Such a complex case requires a multitherapeutic treatment plan and a multidisciplinary mindset.From the entry multitherapeutic
  • This is the complex aggregate of animate and inanimate single-organismic and multi-organismic entities and systems.From the entry multi-organismic
  • It's impossible to datafy complex human emotions like anger, love, and sympathy.From the entry datafy
  • To cater for increasing travellers, this CIQ complex will be expanded.From the entry CIQ
  • The many species that live in the forest canopy constitute a network of life via their complex interactions.From the entry network
  • The new apartment complex will have 50 units.From the entry unit
  • Biosphere 2 was a scientific enterprise aimed at the exploration of the complex web of interactions within life systems.From the entry enterprise
  • It was a complex page, but he set it quickly.From the entry set
  • The function describes a very complex surface.From the entry describe
  • I am expert at making a simple situation complex.From the entry expert
  • The relation between diet and health is complex.From the entry relation
  • A mixture of isooctane and ethyl acetate can be used to elute triglycerides from a complex lipid solution.From the entry elute
  • Supply and demand ebb and flow in a complex interplay.From the entry demand
  • The complex includes the usual utilities (gas and electricity) and amenities like wifi and a gym (toilets with toiletries).From the entry utility
  • They lived in a plush apartment complex.From the entry plush

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 complex in a sentence

How do you use complex in a sentence?
Complex is used as an adjective, noun and verb. For example: “The human body is a complex system made up of many layers.”
What is a short sentence with complex?
“complex algebraic variety”
What does complex mean?
Complex means made up of multiple parts; composite; not simple.

Source and license

Adapted from Wiktionary: complex (page history and authors) and the entries each sentence comes from. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws chose the sentences, left out offensive ones and quotations older than 1900, and marked the word in each. Wiktionary data of 2026-09-02.

Last updated:

Cite this page: “How to use complex in a sentence.” Word.ws, https://word.ws/sentences/complex. Based on Wiktionary, CC BY-SA 4.0.