1. Biology

2. Chemistry

3. Mathematics

4. Geology

5. Other scientific uses

6. Other uses

7. As a name

Complex may refer to:

Biology

• Protein-ligand complex, a complex of a protein bound with a ligand
• Exosome complex, a protein complex that can degrade some types of RNA
• Protein complex, a group of two or more associated polypeptide chains
• Species complex, a cluster of very similar species difficult to delimit
• Mimicry complex, a complex system of organisms and dependencies involved in a case of mimicry
• Pre-Bötzinger complex, a cluster of interneurons in the medulla oblongata

Chemistry

• Coordination complex, also called a "coordination compound" or "metal complex", a structure consisting of a central atom or molecule weakly connected to surrounding atoms or molecules (ligands)
• Chelate complex, a coordination complex with more than one bond

Mathematics

• Complex number, an extension of real numbers obtained by adjoining imaginary numbers
• Complex polytope, an extension of real polytopes generated by unitary reflections
• Complex system, a system of interconnected simple parts that together exhibit a high degree of computational complexity from which emerges a higher order behavior
• Complex analysis, the study of functions of complex numbers
• An element of a complex algebra or field of sets
• Chain complex, a (possibly long) sequence of maps
• Simplicial complex, a kind of topological space that can be divided into fully adjacent triangles, or more generally, into simplices
• CW complex, or closure-finite weak complex, a kind of topological space, a generalization of the simplicial complex
• Line complex, a 3-dimensional family of lines in space

Geology

• Complex crater, a type of large impact crater morphology
• Complex (geology), a lithodermic geological unit
• Volcanic complex, a group of volcanoes
• Complex volcano, a volcano of mixed form
• Ring dike complex, a group of ring dykes
• Accretionary complex, a fossil accretionary wedge

Other scientific uses

• Complex (psychology), a group of mental factors that are unconsciously associated by the individual with a particular subject and influence the individual's attitude and behavior
• Synonym for a complex system which generally includes all interactions between elements

Other uses

• Building complex, a group of inter-related buildings
  • Housing complex, specifically residential

As a name

• Complex (magazine), a young men's style/lifestyle magazine
• CoMPLEX (ucl), an interdisciplinary centre at University College London specialising in bioinformatics and complexity
• Complex (English band), a British psychedelic rock band
• Complex (band), a Japanese rock band
• "Complex" (song), a song by British musician Gary Numan
• The military–industrial complex

• Alberta School for the Deaf
• Alberta school for the deaf
• Alberta Schools Act
• Alberta Schools' Athletic Association
• Alberta Science and Research Authority
• Alberta Scotties Tournament of Hearts
• Alberta scotties tournament of hearts
• Alberta secondary highway
• Alberta secondary highway 500
• Alberta secondary highway 501
• Alberta secondary highway 502
• Alberta secondary highway 503
• Alberta secondary highway 504
• Alberta secondary highway 505
• Alberta secondary highway 506
• Alberta secondary highway 534
• Alberta secondary highway 567
• Alberta secondary highway 575
• Alberta secondary highway 583
• Alberta secondary highway 585
• Alberta secondary highway 611
• Alberta secondary highway 626
• Alberta secondary highway 627
• Alberta secondary highway 630
• Alberta secondary highway 697