dertu -der-de'u- gismu

x1 is a quantity of/contains/is made of dirt/soil/earth/ground from source x2 of composition x3.

Also: x1 is earthen; x3: composition including x3, which need not be exhaustive of composition. See also kliti, terdi, loldi.


In notes:

kliti
x1 is a quantity of/contains/is made of clay [moist, clammy dirt] of composition including x2.
loldi
x1 is a floor/bottom/ground of x2.
terdi
x1 is the Earth/the home planet of race x2; (adjective:) x1 is terrestrial/earthbound.
derba'o
b1 initially grows b2 beyond the soil; b1 sprouts b2 from the ground.
derpesxu
d1=p1 is a quantity of mud of composition d3=p2, made from dirt from source d2
rokspi
s1=r1 is a pebble/piece of stone of type/composition r2=s2 from location r3.
lumbrinki
x1 is an earthworm of species x2.