Polymorphism

In general, polymorphism describes multiple possible states for a single property.

Polymorphism can be:

• In materials science polymorphism is the ability of a solid material to exist in more than one form or crystal structure. Diamond and graphite are examples of polymorphs of carbon. α-ferrite, austenite, and δ-ferrite are polymorphs of iron. When found in elemental solids the condition is also called Allotropy.
• In biology multiple alleles of a gene within a population, usually expressing different phenotypes, are called polymorphism. For instance, human skin color is polymorphic.
• In computer programming, polymorphism is allowing types and implementations to be anything as long as certain contracts are maintained.