superstratum
noun
su·per·stra·tum
| \ ˈsü-pər-ˌstrā-təm
, -ˌstra-; ˌsü-pər-ˈstrā-, -ˈstra-\
, -ˌstra-; ˌsü-pər-ˈstrā-, -ˈstra-\
plural superstrata\ ˈsü-pər-ˌstrā-tə
, -ˌstra- ; ˌsü-pər-ˈstrā- , -ˈstra- \
, -ˌstra- ; ˌsü-pər-ˈstrā- , -ˈstra- \
Definition of superstratum
: an overlying stratum or layer
The superstratum of timidity which often overlies those who are daring and defiant at heart had been passed through …— Thomas Hardy
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