timberline

tim·ber·line  (tmbr-ln)

n. In both senses also called tree line.

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.

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timberline  (tmbr-ln)

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.

Thesaurus

Noun

1.

timberline - line marking the upper limit of tree growth in mountains or northern latitudes timber line, tree line line - a spatial location defined by a real or imaginary unidimensional extent