Tra từ complex - Từ điển Oxford Advanced Learner 8th

com·plex AW [complex complexes] adjective, noun
adjective BrE [ˈkɒmpleks] ; NAmE [kəmˈpleks] ; [ˈkɑːmpleks]
1. made of many different things or parts that are connected; difficult to understand
Syn: ↑complicated
•complex machinery
•the complex structure of the human brain
•a complex road system
•a complex argument/problem/subject
2. (grammar) (of a word or sentence)containing one main part (= the ↑root of a word or ↑main clause of a sentence) and one or more other parts (called affixes or ↑subordinate clauses)
• In the complex sentence, ‘I'd like to go the beach, if it's warm enough’, ‘I'd like to go to the beach’ is the main clause, and ‘if it's warm enough’ is the subordinate clause.
compare ↑compound _adj.

Word Origin:
mid 17th cent. (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.

Example Bank:
•technically complex surgery
•She managed to put over a fairly complex argument in a brilliantly simple way.
•The mechanism involves a complex arrangement of rods and cogs.

noun BrE [ˈkɒmpleks] ; NAmE [ˈkɑːmpleks]
1. a group of buildings of a similar type together in one place
•a sports complex
•an industrial complex (= a site with many factories)
2. a group of things that are connected
• This is just one of a whole complex of issues.
3. (especially in compounds)a mental state that is not normal
•to suffer from a guilt complex
see also ↑inferiority complex, ↑Oedipus complex, ↑persecution complex
4. if sb has a complex about sth, they are worried about it in way that is not normal
•Don't mention her weight— she has a complex about it.

Word Origin:
mid 17th cent. (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.

Synonyms:
building
property • premises • complex • structure • block
These are all words for a structure such as a house, office block or factory that has a roof and four walls
building • a structure such as a house, office block or factory that has a roof and four walls
property • a building or buildings and the surrounding land; land and buildings: ▪ We have a buyer who would like to view the property. ◇ ▪ The price of property has risen enormously.
This word is often used when talking about buying/selling houses or other buildings and land.
premises • [pl.] the building or buildings and surrounding land that a business owns or uses: ▪ The company is looking for larger premises.
complex • a group of buildings of a similar type together in one place: ▪ a leisure complex
structure • a thing that is made of several parts, especially a building: ▪ The pier is a wooden structure.
block • (BrE) a tall building that contains flats or offices; a building that forms part of a school, hospital, etc. and is used for a particular purpose: ▪ a block of flats ◇ ▪ the school's science block
a(n) commercial/industrial/residential building/property/premises/complex/block
an apartment building/complex/block
a/the school building/premises
to build a(n) property/complex/structure/block
to put up a building/property/structure/block
to demolish/pull down a(n) building/property/complex/structure/block

Example Bank:
•Don't keep on at him about his handwriting or he'll get a complex.
•She has a complex about her big ears.
•Don't mention her weight— she has a complex about it.
•He suffers from a guilt complex.
•He will be just one detective working amongst a much bigger complex of colleagues.
•There is a huge complex of different traditions and religions in the area.
•a leisure/sports/shopping complex