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n.
the discipline dealing with the art or science of applying scientific knowledge to practical problems; "he had trouble deciding which branch of engineering to study"
n.
(computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory; "the market for software is expected to expand"
n.
a publication (or a passage from a publication) that is referred to; "he carried an armful of references back to his desk"; "he spent hours looking for the source of that quotation"
n.
the place where something begins, where it springs into being; "the Italian beginning of the Renaissance"; "Jupiter was the origin of the radiation"; "Pittsburgh is the source of the Ohio River"; "communism's Russian root"
n.
the quality (positive or negative) that renders something desirable or valuable; "the Shakespearean Shylock is of dubious value in the modern world"
n.
the power to induce the taking of a course of action or the embracing of a point of view by means of argument or entreaty; "the strength of his argument settled the matter"
n.
an area that is approximately central within some larger region; "it is in the center of town"; "they ran forward into the heart of the struggle"; "they were in the eye of the storm"