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intergradation

[ in-ter-grey-dey-shuhn ]

noun

  1. the act or process of intergrading or the state of being intergraded.
  2. an evolutionary process by which different species of organisms tend to merge through a series of intermediate stages or grades.


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Other Words From

  • inter·gra·dation·al adjective
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Word History and Origins

Origin of intergradation1

First recorded in 1870–75; inter- + gradation
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Example Sentences

Nevertheless, the two specimens are clearly referable to their respective species and show no tendency toward intergradation.

Intergradation was noted in animals from 23 miles southwest of Newcastle and Arvada, Wyoming.

Intergradation occurs with the latter subspecies at Vernal, Uintah County, in cranial measurements and in color.

Intergradation has been noted in specimens from the eastern and southeastern shores of Great Salt Lake.

Intergradation with Dipodomys ordii fetosus occurs near Lund.

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intergovernmentalintergrade