subcrust
noun
sub·crust
ˈsəb+ˌ-
: a layer underlying a crust
especially : the lower course of a bituminous macadam or concrete roadbed
Word History
Etymology
sub- + crust
- composite photograph
- composite print
- composite sailing
- composite sill
- composited
- compositely
- compositeness
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- composites
- compositing
- composition
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- composition of forces
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- composograph