“subsurface materials of the moon”
- Synonyms
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belowground, underground
under the level of the ground
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submarine, undersea
beneath the surface of the sea
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submerged, submersed, underwater
beneath the surface of the water
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subterranean, subterraneous
being or operating under the surface of the earth
- Antonyms:
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surface
on the surface
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overhead
located or originating from above
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aboveground
on or above the surface of the ground
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grade-constructed
constructed at ground level
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opencast, opencut
(of mines and mining) worked from the exposed surface
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