| Subject | English | Catalan |
| environ. | agricultural structure The buildings, machinery, facilities, related to agricultural production | estructures agràries |
| environ. | atmospheric structure The gaseous area surrounding the planet is divided into several concentric spherical strata (layers, like shells) separated by narrow transition zones. The boundaries are know as "pause". More than 99% of the total atmospheric mass is concentrated in the first 40 km from the Earth's surface. Atmospheric layers are characterized by differences in chemical composition that produce variations in temperature | estructura atmosfèrica |
| environ. | built structure Any structure made of stone, bricks, wood, concrete, or steel, built with a roof and walls, such as a house or factory | estructura edificada |
| environ. | chemical structure The arrangement of atoms in a molecule of a chemical compound | estructura química |
| environ. | company structure The type of organization of a company. Three kinds of structure are usually recognized: centralized, formal or hierarchical | estructura de l'empresa |
| environ. | economic structure The underlying framework, including transportation and communications systems, industrial facilities, education and technology, that enables a country or region to produce goods, services and other resources with exchange value | estructura econòmica |
| environ. | employment structure The organization and proportions of the various job types and skill levels in an enterprise or economy | estructura del treball |
| environ. | fisheries structure Refers to all the structures (fishing vessels, trawling nets, factory ships, catcher boats, etc.) used in fishing industry | estructura pesquera |
| environ. | industrial structure No definition needed | estructura industrial |
| environ. | institutional structure An organization's complex system of mutually connected and dependent elements or parts, which make up a definite manner of arrangement | estructura institucional |
| math. | latent structure | estructura latent |
| environ. | population structure The organization of, and inter-relationships among, inhabitants of a given region, country or city | estructura de la població |
| environ. | regional structure The organization or arrangement of a large geographical territory or a designated division of a country or state that may be formulated according to some administrative, biological, political, economic or demographic criteria | estructura regional |
| math. | sampling structure | estructura del mostreig |
| math. | simple structure | estructura simple |
| environ. | social structure A term loosely applied to any recurring pattern of social behaviour; or, more specifically, to the ordered interrelationships between the different elements or a social system or society | estructura social |
| environ. | soil structure The combination or aggregation of primary soil particles into aggregates or clusters, which are separated from adjoining peds by surfaces of weakness. Soil structure is classified on the basis of size, shape, and distinctness into classes, types, and grades | estructura del sòl |
| environ. | structure-activity relationship The association between a chemical structure and carcinogenicity | relació estructura-activitat |
| environ. | structure-borne noise Sound that travels over at least part of its path by means of the vibration of a solid structure | soroll induït |
| environ. | structure plan Metropolitan structure and land use plan intended to outline the general lines along which development should proceed in an area | pla estructural |
| environ. | urban structure The built-up components, the street system and the facilities which make up an urban unit | estructura urbana |