subgrade
[ suhb-greyd ]
/ ˈsʌbˌgreɪd /
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noun
the prepared earth surface on which a pavement or the ballast of a railroad track is placed or upon which the foundation of a structure is built.
adjective
beneath the finished ground level of a project.
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Words nearby subgrade
subgingival, subgingival curettage, subgingival space, subglacial, subglossal, subgrade, subgroup, subgrundation, subgum, subha, subhalide
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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British Dictionary definitions for subgrade
subgrade
/ (ˈsʌbˌɡreɪd) /
noun
the ground beneath a roadway or pavement
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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