Dictionary.com

subgrade

[ suhb-greyd ]
/ ˈsʌbˌgreɪd /
Civil Engineering, Building Trades.
Save This Word!

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.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?

Origin of subgrade

First recorded in 1895–1900; sub- + grade
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use subgrade in a sentence

British Dictionary definitions for subgrade

subgrade
/ (ˈsʌbˌɡreɪd) /

noun
the ground beneath a roadway or pavement
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
FEEDBACK