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   complex

   /ˈkɒmplɛks/

   adjective

   • 1. consisting of many different and connected parts: "a complex network of water channels" Similar compoundcompositecompoundedmultiplex
   • ▪ not easy to analyse or understand; complicated or intricate: "a complex personality" Similar complicatedinvolvedintricateconvolutedtangledelaborateserpentinelabyrinthinetortuousimpenetrableByzantineDaedalianGordiandifficulthardknottytrickythornyproblematicalinformal:fiddlyrare:involuteinvolutedOpposite simplestraightforward
   • 2. denoting or involving numbers or quantities containing both a real and an imaginary part.
   • 3. denoting an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds: "in naming complex ions, the names of the ligands are cited first"

   noun

   • 1. a group or system of different things that are linked in a close or complicated way; a network: "a complex of mountain roads" Similar networksysteminterconnected system/structure/schemenexuswebtissuecombinationcompositesynthesisfusionaggregation
   • ▪ a group of similar buildings or facilities on the same site: "a leisure complex"
   • 2. a related group of repressed or partly repressed emotionally significant ideas which cause psychic conflict leading to abnormal mental states or behaviour.
   • ▪ a strong or disproportionate concern or anxiety about something: informal "there's no point having a complex about losing your hair" Similar obsessionphobiafixationpreoccupationneurosisidée fixeinformal:hang-upthingbee in one's bonnet
   • 3. an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds: "two guanine bases can attach themselves to the same platinum atom, forming a stable complex"
   • ▪ any loosely bonded species formed by the association of two molecules: "cross-linked protein–DNA complexes"

   verb

   • 1. make (an atom or compound) form a complex with another: "the DNA was complexed with the nuclear extract"

   Word Origin mid 17th century (in the sense ‘group of related elements’): from Latin complexus, past participle (used as a noun) of complectere ‘embrace, comprise’, later associated with complexus ‘plaited’; the adjective is partly via French complexe.

   Derivatives

   • 1. complexly adverb

   Scrabble Points: 20

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   • X

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2. People also ask

   What does complex mean?

   • Get a quick, free translation! COMPLEX definition: 1. involving a lot of different but related parts: 2. difficult to understand or find an answer to…. Learn more.

   COMPLEX | English meaning - Cambridge Dictionary

   dictionary.cambridge.org/dictionary/english/complex

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   Is complex a noun or adjective?

   • Use complex to refer to something that is not simple. Something complex has two or more related parts, or is not simple in its structure. As a noun, a complex is a group of units, often a group of buildings. The adjective is stressed on the second syllable, but the noun is stressed on the first syllable.

   Complex - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com/dictionary/complex

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   What is a complex of things?

   • A complex of things is a group or system of things that are connected with each other in a complicated way. ...the complex of clans which occupied the land. ...the military-industrial complex. If someone has a complex about something, they have a mental or emotional problem relating to it, often because of an unpleasant experience in the past.

   COMPLEX definition and meaning | Collins English Dictionary

   www.collinsdictionary.com/dictionary/english/complex

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   What makes a compound a complex?

   • A complex is a substance that is made when two or more simpler compounds join chemically. Chloramines are chemical complexes formed from the reaction between ammonia and chlorine. Ferric iron tends to form complexes with natural water organics. A complex is a substance that is made when two or more simpler compounds join chemically.

   COMPLEX definition and meaning | Collins English Dictionary

   www.collinsdictionary.com/dictionary/english/complex

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3. dictionary.cambridge.org › dictionary › englishCOMPLEX | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

   • Cached

   a particular anxiety or unconscious fear that a person has, especially as a result of an unpleasant experience that they have had in the past or because they have a low opinion of their own worth: an inferiority complex.

4. www.merriam-webster.com › dictionary › complexComplex Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › complex

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   The meaning of COMPLEX is a whole made up of complicated or interrelated parts. How to use complex in a sentence. The Complex Origins of Complex Synonym Discussion of Complex.

5. dictionary.cambridge.org › english › complexCOMPLEX | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › complex

   • Cached

   a particular anxiety or unconscious fear that a person has, especially as a result of an unpleasant experience that they have had in the past or because they have a low opinion of their own worth: an inferiority complex.

6. www.dictionary.com › browse › complexCOMPLEX Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › complex

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   noun. an intricate or complicated association or assemblage of related things, parts, units, etc.: the entire complex of our educational system; an apartment complex. Synonyms: labyrinth, tangle, web, network.

7. www.collinsdictionary.com › dictionary › englishCOMPLEX definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

   • Cached

   A complex is a substance that is made when two or more simpler compounds join chemically. Chloramines are chemical complexes formed from the reaction between ammonia and chlorine. Ferric iron tends to form complexes with natural water organics.

8. www.vocabulary.com › dictionary › complexComplex - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › complex

   Something complex has two or more related parts, or is not simple in its structure. As a noun, a complex is a group of units, often a group of buildings. The adjective is stressed on the second syllable, but the noun is stressed on the first syllable.

9. www.oxfordlearnersdictionaries.com › us › definitioncomplex adjective - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › us › definition

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   adjective. OPAL W OPAL S. /ˈkɒmpleks/ /kəmˈpleks/, /ˈkɑːmpleks/ made of many different things or parts that are connected; difficult to understand synonym complicated. a complex problem/issue/process/system. a complex argument/subject. complex machinery. the complex structure of the human brain.