Polymorphism

• Polymorphism (computer science), the ability in programming to present the same programming interface for differing underlying forms • Ad hoc polymorphism, applying polymorphic functions to arguments of different types • Parametric polymorphism, abstracts types, so that multiple can be used with a single implementation • Bounded quantification, restricts type parameters to a range of subtypes • Subtyping, different classes related by some common superclass can be used in place of that superclass • Row polymorphism, uses structural subtyping to allow polymorphism over records • Polymorphic code, self-modifying program code designed to defeat anti-virus programs or reverse engineering ==Science==

Biology • Chromosomal polymorphism, a condition where one species contains members with varying chromosome counts or shapes • Cell polymorphism, variability in size of cells or nuclei • Gene polymorphism, the existence of more than one allele at a gene's locus within a population • Lipid polymorphism, the property of amphiphiles that gives rise to various aggregations of lipids • Polymorphic, a wave pattern seen on an electrocardiogram; see QRS complex • Polymorphism (biology), the occurrence of more than one form in the same population of a species • Polymorphism (RLFP), a technique that exploits variations in homologous DNA sequences Other sciences • Crystal polymorphism, the existence of a solid material in two or more crystal structures, known as polymorphs • Polymorph, a marketing name for polycaprolactone, a type of thermoplastic which fuses at 60 °C ==Fiction==

• Polymorph, a shapeshifting being in: • "Polymorph" (Red Dwarf), third episode of series III of the science fiction sitcom • "Emohawk: Polymorph II", fourth episode of series VI of the science fiction sitcom • Polymorph (novel), a 1997 cyberpunk novel by Scott Westerfeld • Polymorph, a magical spell in many fantasy role-playing games that transforms a target into one of many different creatures for a period of time ==See also==