by HowStuffWorks.com Contributors Home & Garden | Construction Planning. NEXT PAGENEXT. A prototype is a design tool used to help create a new product, much like a model. There are different kinds of prototypes; some are more like rough drafts and some are more like the final version.
Definition of rash - acting or done without careful consideration of the possible consequences; impetuous Definition of rash - acting or done without careful consideration of the possible consequences; impetuous
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  caustic(adj) any chemical substance that burns or destroys living tissue. 2  acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic(adj) harsh or corrosive in tone.