The three-dimensional quality of sculptured or constructed forms. Plasticity can also refer to the quality of a material which can be easily manipulated ? modeled, molded or pressed into a desired shape; malleable and yet holding its shape. Clay is an example of a material which can be extremely plastic. Alexander Calder (American, 1898-1976) enjoyed the plasticity of wire; Claes Oldenburg (Swedish-American, 1929) has enjoyed using vinyl, plaster and several other materials for their plasticity.Also see plastic, plastic art and plastic arts, and Plasticine.