evo'lutional

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World English Dictionary

evolution (ˌiːvəˈluːʃən)

—n
1.	biology See also natural selection a gradual change in the characteristics of a population of animals or plants over successive generations: accounts for the origin of existing species from ancestors unlike them
2.	a gradual development, esp to a more complex form: the evolution of modern art
3.	the act of throwing off, as heat, gas, vapour, etc
4.	a pattern formed by a series of movements or something similar
5.	Compare involution an algebraic operation in which the root of a number, expression, etc, is extracted
6.	military an exercise carried out in accordance with a set procedure or plan

[C17: from Latin ēvolūtiō an unrolling, from ēvolvere to evolve]

evo'lutionary

—*adj*

evo'lutional

—*adj*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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