top-down(redirected from Top-down and bottom-up design)
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1. Of or relating to a hierarchical structure or process that progresses from a large, basic unit to smaller, detailed subunits: a top-down description of the department's function.
2. Commanded by or originating from ones having the highest rank.
controlled, directed, or organized from the top
1. organized or proceeding from the larger, more general structure to smaller, more detailed units, as in processing information.
2. coming from or directed by those of highest rank.
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|Adj.||1.||top-down - of an approach to a problem that begins at the highest conceptual level and works down to the details; "a top-down analysis might begin by looking at macro-economic trends"; "top-down programming"|
bottom-up - of an approach to a problem that begins with details and works up to the highest conceptual level; "bottom-up parser"; "a bottom-up model of the reading process"