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r selectionor r-se·lec·tion (är′sĭ-lĕk′shən)
A form of selection that occurs in an environment with plentiful resources, favoring a reproductive strategy in which many offspring are produced.
[r(ate of increase).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.