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Meaning of syndiotactic

syn•di•o•tac•tic

Pronunciation: (sin-dī"ō-tak'tik, sin"dī-), [key]
— adj. Chem.
  1. (of a polymer molecule) having a regular alternation of opposite configurations at successive regularly spaced positions along the chain. Cf.(def. 4).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.