There are many who say that the smartest man to have ever lived was Albert Einstein. He is certainly one of the most famous of the great thinkers and his intellect contributed massively to the advancement of science.
A partial is a dental prosthetic (artificial tooth or teeth) that can be removed from the mouth somewhat like an orthodontic retainer. A bridge, on the other hand, is a dental prosthetic that's permanently anchored inside the mouth. Partials are sometimes referred to as RPDs (removable partial dentures). They're often selected as an inexpensive option over a bridge or dental implant for replacing lost teeth. Most partials work in a similar way: Artificial teeth are placed on a molded base to which metal clasps are added.
noun. 1  Dentistry A hard yellowish deposit on the teeth, consisting of organic secretions and food particles deposited in various salts, such as calcium carbonate.  A reddish acid compound, chiefly potassium bitartrate, found in the juice of grapes and deposited on the sides of casks during winemaking.