- composed of many interconnected parts; compound; composite: a complex highway system.
- characterized by a very complicated or involved arrangement of parts, units, etc.: complex machinery.
- so complicated or intricate as to be hard to understand or deal with: a complex problem.
- (of a word) consisting of two parts, at least one of which is a bound form, as childish, which consists of the word child and the bound form -ish.
- complex sentence.
- Mathematics. pertaining to or using complex numbers: complex methods; complex vector space.
- an intricate or complicated association or assemblage of related things, parts, units, etc.: the entire complex of our educational system; an apartment complex.
- Psychology. a system of interrelated, emotion-charged ideas, feelings, memories, and impulses that is usually repressed and that gives rise to abnormal or pathological behavior.
- a fixed idea; an obsessive notion.
- an arbitrary set of elements of a group.
- a collection of simplexes having specified properties.
- Also called coordination compound. Chemistry. a compound in which independently existing molecules or ions of a nonmetal (complexing agent) form coordinate bonds with a metal atom or ion.Compare ligand(def 2).
- Biochemistry. an entity composed of molecules in which the constituents maintain much of their chemical identity: receptor-hormone complex, enzyme-substrate complex.
- Chemistry. to form a complex with.
- Chemistry. to form a complex.
Origin of complex
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for complex
It was a complex task they were asked to do, and every cultural and experiential advantage would be required.Why Did We Panic After 9/11 and Ignore All We Knew About Responding to Security Threats?
December 18, 2014
KSM enters the complex through a “Sally Port,” a series of gates designed to allow just one vehicle in at a time.9/11 Mastermind Is Afraid of the Ladies
December 16, 2014
We are a huge, complex, diverse country still offering freedom, opportunity and hope.Dick Cheney vs. ‘Unbroken’
December 15, 2014
If Congress struggles to keep the lights on, how could it deal with issues as complex as police brutality?Sharpton Recalls Civil Rights Struggle in DC March Against Police Violence
December 13, 2014
Medication can now be taken in a single pill rather than a complex cocktail of tablets.The New Face of HIV Is Gay & Young
December 1, 2014
The case of Yates was by all odds the most complex and bewildering of the four.In the Midst of Alarms
It is only the artificial and the complex that bewilder them.The Gorgon's Head
Yours must be the spirit of the times, strenuous, complex, democratic.The Call of the Twentieth Century
David Starr Jordan
Through them from the garden and the fields entered a complex of sweet odors.Casanova's Homecoming
But the facts are far too complex to enable us thus to rush hastily to an answer.The Truth About Woman
C. Gasquoine Hartley
- made up of various interconnected parts; composite
- (of thoughts, writing, etc) intricate or involved
- (of a word) containing at least one bound form
- (of a noun phrase) containing both a lexical noun and an embedded clause, as for example the italicized parts of the following sentence: I didn't know the man who served me
- (of a sentence) formed by subordination of one clause to another
- maths of or involving one or more complex numbers
- a whole made up of interconnected or related partsa building complex
- psychoanal a group of emotional ideas or impulses that have been banished from the conscious mind but that continue to influence a person's behaviour
- informal an obsession or excessive fearhe's got a complex about cats
- Also called: coordination compound a chemical compound in which molecules, groups, or ions are attached to a central metal atom, esp a transition metal atom, by coordinate bonds
- any chemical compound in which one molecule is linked to another by a coordinate bond
Word Origin and History for complex
1650s, "composed of parts," from French complexe "complicated, complex, intricate" (17c.), from Latin complexus "surrounding, encompassing," past participle of complecti "to encircle, embrace," in transferred use, "to hold fast, master, comprehend," from com- "with" (see com-) + plectere "to weave, braid, twine, entwine," from PIE *plek-to-, from root *plek- "to plait" (see ply (v.1)). The meaning "not easily analyzed" is first recorded 1715. Complex sentence is attested from 1881.
1650s, "a whole comprised of parts," from complex (adj.). Psychological sense of "connected group of repressed ideas" was established by C.G. Jung, 1907.
- A group of related, often repressed memories, thoughts, and impulses that compel characteristic or habitual patterns of feelings, thought, and behavior.
- The relatively stable combination of two or more ions or compounds into a larger structure without covalent binding.
- A composite of chemical or immunological structures.
- An entity made up of three or more interrelated components.
- A group of individual structures known or believed to be anatomically, embryologically, or physiologically related.
- The combination of factors, symptoms, or signs that forms a syndrome.
- Consisting of interconnected or interwoven parts; composite.
- Composed of two or more units.
- Relating to a group of individual structures known or considered to be anatomically, embryologically, or physiologically related.