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1. Dictionary

   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

   • C

     3

   • O

     1

   • M

     3

   • P

     3

   • L

     1

   • E

     1

   • X

     8

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

   dictionary.cambridge.org › dictionary › english

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   COMPLEX definition: 1. involving a lot of different but related parts: 2. difficult to understand or find an answer to…. Learn more.

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

   www.merriam-webster.com › dictionary › complex

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   Jul 6, 2012 · a. : a group of culture traits relating to a single activity (such as hunting), process (such as use of flint), or culture unit. b (1) : a group of repressed desires and memories that exerts a dominating influence upon the personality. a guilt complex. (2)

4. 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. I think he's got a complex about being bald.

5. 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.

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

   www.collinsdictionary.com › dictionary › english

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   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.

7. 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. Complex is from Latin complexus, from complecti "to encircle or embrace."

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

   www.oxfordlearnersdictionaries.com › us › definition

   • Cached

   /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.