regolith definition by Wordo

Noun

The

layer

of

loose

rock

,

dust

,

sand

,

and

soil

,

resting

on

the

bedrock

,

that

constitutes

the

surface

layer

of

most

dry

land

on

Earth

,

the

Moon

,

and

other

large

solid

aggregated

celestial

objects

.

Submarine

regolith

also

exists

.