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substratum

play
noun sub·stra·tum \ˈsəb-ˌstrā-təm, -ˌstra-, ˌsəb-ˈ\

Simple Definition of substratum

  • : a layer of something (such as soil or rock) that is under another layer

Source: Merriam-Webster's Learner's Dictionary

Full Definition of substratum

plural

substrata

play \-tə\
  1. :  an underlying support :  foundation: asa :  substance that is a permanent subject of qualities or phenomenab :  the material of which something is made and from which it derives its special qualitiesc :  a layer beneath the surface soil; specifically :  subsoild :  substrate 2

Examples of substratum in a sentence

  1. drilled into the bedrock substratum



Origin and Etymology 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


Medical Dictionary

substratum

play
noun sub·stra·tum \ˈsəb-ˌstrāt-əm, -ˌstrat-, ˈsəb-ˈ\

Medical Definition of substratum

plural

substrata

\-ə\play
  1. 1:  the material of which something is made and from which it derives its special qualities

  2. 2:  substrate 2




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