[mez-ahrk, mes-, mee-zahrk, -sahrk]
- Botany. (of a primary xylem or root) developing from both the periphery and the center; having the older cells surrounded by the younger cells.
- Ecology. (of a sere) originating in a mesic habitat.
Origin of mesarch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mesarch
The mesarch structure of the leaf-bundles is met with in a less pronounced form in the flower peduncles of some cycads.
C19: from mes (o)- + Greek arkhē beginning
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012