Definitions for complementationˌkɒm plə mənˈteɪ ʃən

This page provides all possible meanings and translations of the word complementation

Princeton's WordNet

  1. complementation(noun)

    the grammatical relation of a word or phrase to a predicate

  2. complementary distribution, complementation(noun)

    (linguistics) a distribution of related speech sounds or forms in such a way that they only appear in different contexts


  1. complementation(Noun)

    The replacement of a set by its complement

  2. complementation(Noun)

    The interaction between two genetic units such that an organism can function normally if either one is defective

  3. complementation(Noun)

    The relationship of a phrase to its predicate


  1. Complementation

    In genetics, complementation occurs when two strains of an organism with different homozygous recessive mutations that produce the same phenotype produce offspring with the wild-type phenotype when mated or crossed. Complementation will occur only if the mutations are in different genes. In this case, each strain's genome supplies the wild-type allele to "complement" the mutated allele of the other strain's genome. Since the mutations are recessive, the offspring will display the wild-type phenotype. A complementation test can be used to test whether the mutations in two strains are in different genes. Complementation will not occur if the mutations are in the same gene. The convenience and essence of this test is that the mutations that produce a phenotype can be assigned to different genes without the exact knowledge of what the gene product is doing on a molecular level. The complementation test was developed by American geneticist Edward B. Lewis. If the combination of two genomes containing different recessive mutations yields a mutant phenotype, then there are three possibilities: ⁕Mutations occur in the same gene.


Find a translation for the complementation definition in other languages:

Select another language:

Discuss these complementation definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"complementation." STANDS4 LLC, 2015. Web. 5 Oct. 2015. <>.

Are we missing a good definition for complementation? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for complementation:

Thanks for your vote! We truly appreciate your support.