treelined

Treelined is an adjective describing something bordered or shaded by a row of trees on one or both sides, most commonly used to describe streets, avenues, sidewalks, driveways, or corridors. The standard written form is usually "tree-lined" with a hyphen; "treelined" occurs less commonly, often in casual writing, branding, or as a stylistic choice in titles or product names. The term stems from the combination of "tree" and "lined," indicating a linear arrangement of trees.

In urban planning and landscape design, treelined streets are valued for aesthetic appeal, shade, precipitation interception, improved air quality, noise reduction, and wildlife habitat; they can also influence microclimates by reducing heat islands. The presence of trees at streetscapes is linked to perceived safety and property value, though maintenance and species selection are important to avoid hazards such as root damage or fallen branches.

Common usage includes phrases like "a treelined boulevard" or "a treelined residential street." Notable examples of tree-lined avenues include historical boulevards such as the Champs-Élysées, renowned for its rows of elm trees; contemporary urban projects often emphasize treelined corridors as a core feature of livable cities.

See also: tree-lined street, urban forestry, green infrastructure, canopy cover, streetscape.