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subbase

noun
sub·​base | \ ˈsəb-ˌbās How to pronounce subbase (audio) \

Definition of subbase

: underlying support placed below what is normally construed as a base: such as
a : the lowest member horizontally of an architectural base or of a baseboard or pedestal
b : pervious fill (such as crushed stone) placed under a roadbed

Examples of subbase in a Sentence

Recent Examples on the Web

 According to the audit, streets are constructed in four levels — surface, base, subbase and subgrade — so a resurfaced road would not necessarily cure a flawed subgrade. — Jeff Mcdonald, sandiegouniontribune.com, "San Diego roads need more attention and oversight, audit finds," 13 July 2017

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

First Known Use of subbase

1667, in the meaning defined above

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More from Merriam-Webster on subbase

Rhyming Dictionary: Words that rhyme with subbase

Britannica.com: Encyclopedia article about subbase

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