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  • aspen
    aspen
    noun
    any of various poplars, as Populus tremula, of Europe, and P. tremuloides quaking aspen or P. alba white aspen, of America, having soft wood and alternate ovate leaves that tremble in the slightest breeze.
  • Aspen
    Aspen
    noun
    a town in central Colorado: ski resort.
Synonyms

aspen

1 American  
[as-puhn] / ˈæs pən /

noun

  1. any of various poplars, as Populus tremula, of Europe, and P. tremuloides quaking aspen or P. alba white aspen, of America, having soft wood and alternate ovate leaves that tremble in the slightest breeze.


adjective

  1. of or relating to the aspen.

  2. trembling or quivering, like the leaves of the aspen.

Aspen 2 American  
[as-puhn] / ˈæs pən /

noun

  1. a town in central Colorado: ski resort.


aspen British  
/ ˈæspən /

noun

  1. Archaic name: asp.  any of several trees of the salicaceous genus Populus, such as P. tremula of Europe, in which the leaves are attached to the stem by long flattened stalks so that they quiver in the wind

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. archaic trembling

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of aspen

1350–1400; Middle English aspen (adj.), Old English æspen; cognate with Old Frisian espen (adj.), espenbeam, Middle Dutch espenboom, Old High German espîn (adj.). See asp 2, -en 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The sun was bright, the temperatures hovered in the upper-60s, and leaves of maple, oak, aspen and ginkgo trees colored the city with splashes of yellow, orange and red.

From Los Angeles Times • Oct. 16, 2025

It has been trying to restore the woodlands by introducing downy birch, sessile oak, hazel, willow, aspen and alder as well as endangered tree species such as Arran whitebeam.

From BBC • Apr. 28, 2025

In many areas, deciduous shrubs and trees, like willow and aspen, are moving in after a fire.

From Science Daily • Apr. 16, 2024

When she reached the tree line, she stopped and turned to look back at her silent audience for a moment, then disappeared into an aspen grove, its branches barren.

From Seattle Times • Dec. 18, 2023

He couldn’t identify most of it—except die evergreens—and some leafy trees he thought might be aspen.

From "Hatchet" by Gary Paulsen

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