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]

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary