tree line

American  

[tree-lahyn] / ˈtriˌlaɪn /

Or treeline

noun

1. timberline.

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tree line British  

noun

1. 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

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tree line Scientific  

1. See timberline

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Example Sentences

See Examples For:

tree line

Viewed from the village below, or glimpsed on the way up the forested hill, the structure looks topographical—a glistening summit just above a tree line.

From The Wall Street Journal ● Mar. 6, 2026

Although many of Alabama’s old-growth forests have long been cut down and replaced with trees that grow on a timeline more suitable for its logging industry, its tree line is still lush and visually impressive.

From Slate ● Aug. 31, 2025

He used to farm the fields nearby their dug-out – hidden in a tree line.

From BBC ● May 26, 2024

Once above the tree line, Matthes said, he swapped his snowshoes for boots with micro spikes because the snow wasn’t deep and it was easier to navigate the rocks and ridges.

From Seattle Times ● Feb. 20, 2024

The coolness Mark had felt upon waking up seemed like a joke now—he was already sweating from the steadily rising temperature as the brutal sun rimmed the sparse tree line of the mountain peaks above.

From "The Kill Order (Maze Runner, Book Four; Origin)" by James Dashner