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Meaning of retroserrulate

ret•ro•ser•ru•late

Pronunciation: (re"trō-ser'yu-lit, -lāt", -ser'u-), [key]
— adj. Bot., Zool.
  1. having tiny retrorse teeth or barbs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.