First Known Use: 1631
Dictionary
substratum
noun sub·stra·tum \ˈsəb-ˌstrā-təm, -ˌstra-, ˌsəb-ˈ\
: a layer of something (such as soil or rock) that is under another layer
plural sub·stra·ta\-tə\
Full Definition of SUBSTRATUM
: an underlying support : foundation: as a : substance that is a permanent subject of qualities or phenomena b : the material of which something is made and from which it derives its special qualities c : a layer beneath the surface soil; specifically : subsoil d : substrate 2
See substratum defined for English-language learners
See substratum defined for kids
ADVERTISEMENT
Origin of SUBSTRATUM
Medieval Latin, from Latin, neuter of substratus, past participle of substernere to spread under, from sub- + sternere to spread — more at strew
Rhymes with SUBSTRATUM
Medical Dictionary
substratum
noun sub·stra·tum \ˈsəb-ˌstrāt-əm, -ˌstrat-, ˈsəb-ˈ\
plural sub·stra·ta \-ə\
Medical Definition of SUBSTRATUM
1
: the material of which something is made and from which it derives its special qualities
2
: substrate 2
Browse
Next Word in the Dictionary: substriatePrevious Word in the Dictionary: substratosphereAll Words Near: substratum
ADVERTISEMENT
Seen & Heard
What made you want to look up substratum? Please tell us where you read or heard it (including the quote, if possible).