(mathematics) A set together with a collection of mathematical objects such as other sets, relations or operations which endow it with additional structure.

(economics) That portion of the public sector deficit which exists even when the economy is at potential. Government spending beyond government revenues at times of normal, predictable economic activity, as opposed to a cyclical deficit.

plural of structural isomer

plural of periodic structure

Loss of the load-carrying capacity of a component or member within a structure or of the structure itself. Structural failure is initiated when the material in a structure is stressed to its strength limit, thus causing fracture or excessive deformations.

plural of metrical structure

plural of dramatic structure

(evolutionary theory) A structure in an organism that has lost all or most of its original function in the course of evolution, such as human appendixes.

Misspelling of quaternary structure.

(biochemistry, molecular biology) The arrangement of multiple folded or coiled proteins to form a multi-subunit complex.