- the altitude above sea level at which timber ceases to grow.
- the arctic or antarctic limit of tree growth.
Origin of timberline
Also called tree line, tree·line [tree-lahyn] /ˈtriˌlaɪn/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the zone, at high altitudes or high latitudes, beyond which no trees grow. Trees growing between the timberline and the tree line are typically stunted
- the altitudinal or latitudinal limit of normal tree growthSee also tree line
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
Word Origin and History for tree line
Online Etymology Dictionary, © 2010 Douglas Harper
- See timberline.
- A geographic boundary beyond which trees cannot grow. On the Earth as a whole, the timberline is the northernmost or southernmost latitude at which trees can survive; in a mountainous region, it is the highest elevation at which trees can survive. Also called tree line
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