1 subgrade | Definition of subgrade
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subgrade

noun
sub·​grade | \ ˈsəb-ˌgrād How to pronounce subgrade (audio) \

Definition of subgrade

: a surface of earth or rock leveled off to receive a foundation (as of a road)

Examples of subgrade in a Sentence

Recent Examples on the Web

 Resurfacing projects seal the surface to prevent rain water from reaching the base course and the subgrade and degrading those materials. — Mike Danahey, Elgin Courier-News, "Elgin planning $2.17 million in street resurfacing," 11 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'subgrade.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of subgrade

1893, in the meaning defined above

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