: of, relating to, or being a forest characterized by the presence of large old trees, numerous snags and woody debris, and a multilayered canopy and that is usually in a late stage of ecological succession
old growth noun

Examples of old-growth in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
However, the project has run into stiff opposition from Sacramento County residents and conservation groups over how the nearly 3,000-acre solar field would necessitate the destruction of more than 3,000 old-growth oak trees. Cecilio Padilla, CBS News, 5 Jan. 2026 One of California's best state parks, Humboldt Redwoods State Park charms with its old-growth redwood forest, which covers about one-third of the park. Evie Carrick, Travel + Leisure, 9 Dec. 2025 Snowmobiling Obsessive trail grooming and pristine old-growth forest make the Jordan Valley Snowmobile Trail a heart-of-winter ride. Outside, 17 Nov. 2025 The Great Smoky Mountains are synonymous with waterfalls, verdant valleys, and old-growth forests that produce the range’s signature blue-gray haze. AFAR Media, 30 Oct. 2025 See All Example Sentences for old-growth

Word History

First Known Use

1868, in the meaning defined above

Time Traveler
The first known use of old-growth was in 1868

Browse Nearby Words

Cite this Entry

“Old-growth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/old-growth. Accessed 10 Jan. 2026.

Kids Definition

old-growth

adjective
ˈōl(d)-ˈgrōth
: of, relating to, or being a forest characterized by the presence of large old trees, dead standing trees, and fallen rotting trees and that is usually in a late stage of development
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!