What is a prototype? 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. When you first come up with an idea for a new product, you'll probably sketch it out so you can show people what you're thinking of: This is one version of a prototype. But as time goes on, you'll want to make your drawing more detailed, especially if you're thinking about creating a complicated system.
Definition of sneeze. sneezed. ; sneezing. intransitive verb. : to make a sudden violent spasmodic audible expiration of breath through the nose and mouth especially as a reflex act.
A sneeze is a reflexive action usually produced by your body in response to an irritant in the nasal mucosa. However, all reflexes have thresholds. Similar to the knee jerk when the doctor hits it with a little rubber hammer, we sneeze when dust or other irritants stimulate specific areas of nasal tissue. When those areas inside your nasal cavity and sinuses are stimulated, a signal is then sent to your brain.