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xerarch

[zeer-ahrk]
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adjective Ecology.
  1. (of a sere) originating in a dry habitat.
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Origin of xerarch

1935–40; xer- + -arch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for xerarch

xerarch

adjective
  1. ecology (of a sere) having its origin in a dry habitat
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Word Origin

from xer (o) - + Greek arkhē a beginning, from arkhein to begin
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