Noun
A very large structure.
(architecture) A specific type of structure characterized by very large buildings with strictly artificial forms.
Synonym: omnibuilding
(science fiction) A hypothetical structure not possible with current technology, e.g., a Dyson sphere.
(uncountable) The large-scale structure of a material, as contrasted to the fine-scale structure.
Synonym: macrostructure
Antonym: microstructure