- (of a sere) originating in a dry habitat.
Origin of xerarch
1935–40; xer- + -arch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- ecology (of a sere) having its origin in a dry habitat
from xer (o) - + Greek arkhē a beginning, from arkhein to begin