timberline(redirected from Timber-line)
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1. The elevation in a mountainous region above which trees do not grow.
2. The northern or southern latitude beyond which trees do not grow. In both senses also called tree line.
(Physical Geography) the altitudinal or latitudinal limit of normal tree growth. See also tree line
1. the altitude above sea level at which timber ceases to grow.
2. the arctic or antarctic limit of tree growth.
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.