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n.
drawing a figure satisfying certain conditions as part of solving a problem or proving a theorem; "the assignment was to make a construction that could be used in proving the Pythagorean theorem"
n.
a thing constructed; a complex entity constructed of many parts; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"
n.
the commercial activity involved in repairing old structures or constructing new ones; "their main business is home construction"; "workers in the building trades"
n.
a group of words that form a constituent of a sentence and are considered as a single unit; "I concluded from his awkward constructions that he was a foreigner"
n.
(physical chemistry) a sample of matter in which substances in different phases are in equilibrium; "in a static system oil cannot be replaced by water on a surface"; "a system generating hydrogen peroxide"