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Meaning of mesarch

mes•arch

Pronunciation: (mez'ärk, mes'-, mē'zärk, -särk), [key]
— adj.
  1. (of a primary xylem or root) developing from both the periphery and the center; having the older cells surrounded by the younger cells.
  2. (of a sere) originating in a mesic habitat.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.