Definition of complex in English:

complex

Syllabification: com·plex

adjective

Pronunciation: /kämˈpleks, kəmˈpleks, ˈkämˌpleks
 
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  • 1Consisting of many different and connected parts: a complex network of water channels
    More example sentences
    • The plant's shoots receive nourishment from a complex network of connections to the roots.
    • The hips, on the other hand, are a very large and complex joint with many different muscles and attachments.
    • As the vocal folds consist of a complex web of different muscle fibres, the tension and density of vocal folds can vary considerably.
    Synonyms
  • 1.1Not easy to analyze or understand; complicated or intricate: a complex personality the situation is more complex than it appears
    More example sentences
    • Miller's writing is excellent, and he makes some rather complex biochemistry easy to understand.
    • In other words, the problems are much more complex than Mr. Baker understands or cares to discuss.
    • However, the whole matter of indirect tax liability is devilishly complex and difficult to understand.
    Synonyms
  • 2 Mathematics Denoting or involving numbers or quantities containing both a real and an imaginary part.
    More example sentences
    • He also classified real and complex numbers into classes which are algebraically independent.
    • Bombelli was the first person to write down the rules for addition, subtraction and multiplication of complex numbers.
    • In addition to his work on geometry, Bolyai developed a rigorous geometric concept of complex numbers as ordered pairs of real numbers.
  • 3 Chemistry Denoting an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds.
    More example sentences
    • Often the atoms comprising a complex molecule can be arranged in several ways and still satisfy the octet rule for each atom.
    • Carbohydrates can form more complex molecules when linked with other molecules.
    • This process occurs when oxygen atoms bond to an iron atom at the center of a complex protein molecule known as oxyhemoglobin.

noun

Pronunciation: /ˈkämˌpleks
 
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  • 1A group of similar buildings or facilities on the same site: a new apartment complex a complex of hotels
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    • He has watched as new building complexes have risen over sites he knows contain more lost tombstones.
    • Dentists' offices, doctors' offices and markets were all built into the apartment complexes to make life more efficient.
    • About 70 families were left homeless by the fire, which destroyed three buildings in the apartment complex.
  • 1.1A group or system of different things that are linked in a close or complicated way; a network: a complex of mountain roads
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    • ‘Network’ includes a complex of interconnected computer or communication systems of any type.
    • The complex of field systems and large stone walls extend from the north western slopes of Mount Brandon to within the boundaries of Dingle.
    • The wheel itself was split into many different complexes.
    Synonyms
    network, system, nexus, web, tissue; combination, aggregation
  • 2 Psychoanalysis A related group of emotionally significant ideas that are completely or partly repressed and that cause psychic conflict leading to abnormal mental states or behavior.
    More example sentences
    • For about six to eight hours you seem to have no physical experience of the chronic muscular tensions that Reich says are symptomatic of unhealthy mental or emotional complexes.
    • Jung, Freud and comrades helped to systematise intuitive skill while deciphering some psychic complexes of their own Europe in turmoil.
    • Like Jack, David had a complex and conflicted history of diagnoses, treatments and medication.
  • 2.1 informal A disproportionate concern or anxiety about something: there’s no point having a complex about losing your hair
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    • I had such a complex about it that I never noticed that I was actually quite fair compared to everyone in the class.
    • He was also a bookworm who had a complex about his family's poverty and a fan of kung fu and violent movies.
    • Perhaps I should get a complex about the Jonah joke.
    Synonyms
    obsession, fixation, preoccupation; neurosis
    informal hang-up, thing, bee in one's bonnet
  • 3 Chemistry An ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds.
    More example sentences
    • It is known that metal cations form complexes with anionic phosphodiester groups and carbonyl oxygens in the glycerol backbone of phosphocholine lipids.
    • It correctly accounts for the structures of most covalent compounds of elements other than transition metal complexes.
    • If two molecules or complexes have the same molecular formula they are candidates for stereochemical analysis.
  • 3.1Any loosely bonded species formed by the association of two molecules: cross-linked protein-DNA complexes
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    • This might occur in newly synthesized proteins to aid in folding or in mature proteins to control their activity or association with other protein complexes.
    • The chromo-domain and the related chromo-shadow domain mediate the formation of protein complexes and their association with chromatin.
    • It is not, however, clear whether association of ternary complexes is necessary to confer photoactivity, for instance by a stabilization effect.

verb

Pronunciation: /kämˈpleks, kəmˈpleks, ˈkämˌpleks
 
 
/
[with object] (usually be complexed) Chemistry Back to top  
  • Make (an atom or compound) form a complex with another: the DNA was complexed with the nuclear extract (as adjective complexed) the complexed metal ion
    More example sentences
    • Chloride is complexed with the silver chromate and fixed in a circular pattern around the entry point.
    • They may reduce mineral metal ions through direct contact or by reducing complexed ions.
    • Iron is mostly complexed with the organic ligands or colloids that are very abundant in natural seawater.

Derivatives

complexation

Pronunciation: /kämˌplekˈsāSHən, kəm-/
noun
( Chemistry )
More example sentences
  • The resulting NTA surface is activated by complexation of Cu 2 + ions rendering it capable of reversible immobilization of His-tagged proteins.
  • These results can be understood on the basis of preferential complexation of PicoGreen with base paired structures assumed by DNA following both intramolecular and intermolecular aggregation.
  • In our analysis of complexation of lipids via water bridging, we do not distinguish between the two types of hydrogen-bonded interactions between cholesterol and water, placing them both in the general binding mode category, WB.

complexly

adverb
More example sentences
  • As it is, the somewhat uniform and monolithic representation of ‘the West’ mars the attempt to produce a nuanced and subtle reading of cultural hybridity as the inevitable product of a complexly interwoven global milieu.
  • In contradiction to the usual concept of poetry as dense and academic, complexly layered with meaning and allusion, McGarragle is hoping to hook audiences with ‘in-between’ poetry.
  • Modern fathers are complex - and they have to be complexly, not crudely, managed to get the best out of them.

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.

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