ETYM Abbrev. from cadet.
Someone who is morally reprehensible; SYN. bounder, blackguard, dog, hound, heel.
1. An omnibus conductor.
2. A man who acts with deliberate disregard for another's feelings or rights.

Computer Aided Design.
Acronym for computer-aided design. A system of programs and workstations used in designing engineering, architectural, and scientific models ranging from simple tools to buildings, aircraft, integrated circuits, and molecules. Various CAD applications create objects in two or three dimensions, presenting the results as wire-frame “skeletons,” as more substantial models with shaded surfaces, or as solid objects. Some programs can also rotate or resize models, show interior views, generate lists of materials required for construction, and perform other allied functions. CAD programs rely on mathematics, often requiring the computing power of a high-performance workstation. See also CAD/CAM, I-CASE.
(acronym for computer-aided design) The use of computers in creating and editing design drawings. CAD also allows such things as automatic testing of designs and multiple or animated three-dimensional views of designs. CAD systems are widely used in architecture, electronics, and engineering, for example in the motor-vehicle industry, where automobiles designed with the assistance of computers are now commonplace.
A related development is CAM (computer-assisted manufacturing).