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1. The doctrine of purposelessness in nature.
2. Purposelessness in natural structures, as manifested by the existence of vestigial or nonfunctional organs or parts.
dys·tel′e·o·log′i·cal (-ə-lŏj′ĭ-kəl) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.