subzonen.
/ˈsʌbzəʊn/, U.S. /ˈsəbˌzoʊn/ Chiefly Ecology and Geography.
A subdivision of a zone.
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the world > the earth > region of the earth > zone or belt > [noun]
linea1387
climatea1393
clime1553
region1556
zone1559
belt1796
subzone1851
dead zone1926
1851 E. Forbes in Edinb. New Philos. Jrnl. 51 386 The uppermost of these is the tract between tide-marks; this is the Littoral Zone. This zone is divided into four sub-zones or regions.
1894 Geol. Mag. Oct. 442 Showing five sub-zones..with names of all the genera and species found in each.
1926 Ecology 7 442 The other crops will do well in both subzones as long as they have sufficient water for their needs.
1989 S. Chinodya Harvest of Thorns (1990) xxx. 213 He had not been able to meet them earlier because of dense enemy patrols in the neighbouring sub-zone.
2005 O. Heikkinen in M. Seppälä Physical Geogr. Fennoscandia (2008) xi. 191/1 Systematic climatic transitions are discernible between the subzones, sectors, and provinces.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1851