The structure of a thing is how the parts of it relate to each other, how it is "assembled". Structure may also refer to: Architecture Architectural structure, a man-made structure used or intended for supporting or sheltering any use or continuous occupancy Building Nonbuilding structure Building (disambiguation) Engineering Structural engineering Structural analysis, the study of the strength and properties of structures Biology Canopy (biology) structure, organization or three-dimensional geometry of a plant canopy Community (ecology) structure, ecological organization of a biological community Structure (journal), a scientific journal describing protein structures Structure, a journal on form and function in modern biology Chemistry Chemical structure, the spatial arrangement of atoms and bonds in a molecule Protein structure The spatial arrangement of ions, atoms, or molecules in condensed matter Crystal structure Structure of liquids and glasses Mathematics Mathematical structure on a set, additional mathematical objects that in some manner attach to the set, making it easier to visualize or work with, or endowing the collection with meaning or significance Algebraic structure, the systems that are studied in universal algebra Structure (mathematical logic), the algebraic structures studied in model theory Structure constants, defining a Lie algebra or an algebra over a field Structuralism (philosophy of mathematics), a theory in the philosophy of mathematics that holds that mathematical theories describe structures of mathematical objects Social sciences and linguistics Structuralism, the theory that elements of human culture must be understood in terms of their relationship to a larger, overarching system or structure Structural linguistics, an approach to linguistics originating from the work of Ferdinand de Saussure, a part of the overall approach of structuralism Deep structure and surface structure, concepts in linguistics, specifically the study of syntax in the Chomskyan tradition Social structure, a pattern of social arrangements in society Structural functionalism, a theory of society as a system whose parts work together to promote solidarity and stability Functional structuralism, a theory of society that deduces structure from function Structural anthropology, a theory of social structure in primitive societies, strongly associated with the work of Claude Lévi Strauss Biogenetic structuralism, a theory of anthropology grounded in neuroscience Structuration theory, a theory of social systems based in the analysis of both structure and agents Structure and agency, two confronted theories about human behaviour Base and superstructure, two parts of a Marxist analysis of society Structural Marxism, an approach to Marxism based on structuralism, associated with Louis Althusser