timberline

[ tim-ber-lahyn ]
/ ˈtɪm bərˌlaɪn /

noun

the altitude above sea level at which timber ceases to grow.
the arctic or antarctic limit of tree growth.
Also called tree line, tree·line [tree-lahyn] /ˈtriˌlaɪn/.

Origin of timberline

An Americanism dating back to 1865–70; timber + line1

Example sentences from the Web for timberline

British Dictionary definitions for timberline

timberline
/ (ˈtɪmbəˌlaɪn) /

noun

the altitudinal or latitudinal limit of normal tree growth See also tree line

Scientific definitions for timberline

timberline
[ tĭmbər-līn′ ]

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