Polymorphism, polymorphic, polymorph, polymorphous, or polymorphy may refer to: Computing 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 Genetic polymorphism, the branching of the genetic tree, caused by two or more alleles occurring at one DNA position or in one DNA region, each with appreciable frequency in the 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 Polymorphism (materials science), 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 (Red Dwarf character), seen in the series III episode "Polymorph" 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 Dimorphism (disambiguation) Monomorphic (disambiguation) Polymorphism in Lepidoptera Shapeshifter (disambiguation)