substratum

sub·stra·tum

noun
\ˈsəb-ˌstrā-təm, -ˌstra-, ˌsəb-ˈ\

plural sub·stra·ta\-tə\

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

Examples of SUBSTRATUM

1. drilled into the bedrock substratum

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

First Known Use: 1631

Rhymes with SUBSTRATUM

pomatum, sense-datum, verbatim