Engineering

• primary user


  The person who will use the product.
• Stakeholder

  The person who buys it, but not uses it like: parents, teachers.

  or

  Someone who would invest their money in the product.
• The colour wheel

  A visual representation of colours, with hues arranged according to wavelength.

  
• Ergonomics (human factors)

  The study of how products can be designed in order that people can use them more efficiently and comfortably.
• anthropometrics

  The study of the sizes of people in relation to products.

  Anthropometric data is used to help design products.
• Aesthetics

  A core design principle that defines a design's pleasing qualities.
• design constraint

  A limitation, something that you have no control over ; you can't change in your design solution.
• situation


  a design problem; a reason for producing a product.
• Brief


  how you will solve that problem; a solution to that problem.
• C.A.D (computer aided design) and C.A.M (computer aided manufacturing)


  Used to design and manufacture prototypes, finished products and production runs of products.
• prototype


  an initial creation of a product that shows the basic of what a product will look like, what it do and how it operates. It's not to be the first version but a rough draft of the product.
• Plastic injection moulding


  The process of melting plastic pellets (thermosetting / thermoplastic polymers) that once malleable enough, are injected into mould, which solidifies to produce the final product.