Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Latin
Origin: complexus, past participle of complecti 'to include (many different things)', from com- ( COM-) + plectere ( PLEXUS)

complex

1 adjective
     
Related topics: Grammar
com‧plex1 S3 W2
1 consisting of many different parts and often difficult to understand [= complicated; ≠ simple]:
a complex system of highways
Photosynthesis is a highly complex process.
Peter seemed to have an instant understanding of the most complex issues.
It was a very complex relationship between two complex people.
2SLG technical a complex word or sentence contains a main part and one or more other parts [↪ compound]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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