noun, plural com·plex·i·ties for 2.
- the state or quality of being the complexity of urban life.; intricacy:
- something the complexities of foreign policy.:
noun plural -ties
- the state or quality of being intricate or complex
- something intricate or complex; complication
1721, “composite nature,” from(adj.) + . Meaning “intricacy” is from 1790. Meaning “a complex condition” is from 1794.