Topic: BUILDINGS
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com‧plex2
[countable]
[countable]1TBB a group of buildings, or a large building with many parts, used for a particular purpose :
a three-story apartment complex
a three-story apartment complex2 a large number of things which are closely related :
China was a complex of different societies.
a complex of something
formal
China was a complex of different societies.3MP an emotional problem in which someone is unnecessarily anxious about something or thinks too much about something :

