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polymorphism(noun) Crystallization of a compound in at least two distinct forms. Synonyms: pleomorphismUsage: Calcium carbonate possesses the characteristic of polymorphism, since it crystallizes as calcite or aragonite.
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polymorphism (n.)
1839, from polymorph + -ism.
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polymorph (n.)
"organism of several forms," 1828, from Greek polymorphos "of many forms".
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polymorphous (adj.)
1785, from Greek polymorphos "multiform, of many forms, manifold," from poly- "many" + morphe "shape, form" (Morpheus). Related: Polymorphic; polymorphously; polymorphousness.
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polymorphism
noun
BIOLOGY
the occurrence of different forms among the members of a population or colony, or in the life cycle of an individual organism.
"the workers of this species exhibit polymorphism, specialized physical castes"
GENETICS
the presence of genetic variation within a population, upon which natural selection can operate.
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I grew up in an area with sassafras trees, so I am long familiar with seeing polymorphic leaves like these. 
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[image not available]
AN EXAMPLE FOR BALANCED POLYMORPHISM
PHENOTYPICALLY DISTINCT FORMS OF A TRAIT IN A SINGLE POPULATION OF A SPECIES.
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Gracious, monamagda, what PRETTY birds! =^_______^=
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Noun
1.
polymorphism - (genetics) the genetic variation within a population that natural selection can operate on
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
organic phenomenon - (biology) a natural phenomenon involving living plants and animals
single nucleotide polymorphism, SNP - (genetics) genetic variation in a DNA sequence that occurs when a single nucleotide in a genome is altered; SNPs are usually considered to be point mutations that have been evolutionarily successful enough to recur in a significant proportion of the population of a species
2.
polymorphism - (chemistry) the existence of different kinds of crystal of the same chemical compound
pleomorphism
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
chemical phenomenon - any natural phenomenon involving chemistry (as changes to atoms or molecules)
dimorphism - (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms
3.
polymorphism - (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences)
biological science, biology - the science that studies living organisms
organic phenomenon - (biology) a natural phenomenon involving living plants and animals
dimorphism - (biology) the existence of two forms of individual within the same animal species (independent of sex differences)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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