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   Sub·stra·tum

   /ˈsəbˌstrādəm/

   

   noun

   • 1. an underlying layer or substance, in particular a layer of rock or soil beneath the surface of the ground: "the plant will grow very rapidly and send out runners above the substratum"
   • ▪ a foundation or basis of something: "there is a broad substratum of truth in it"

   Word Origin mid 17th century: modern Latin, neuter past participle (used as a noun) of Latin substernere, from sub- ‘below’ + sternere ‘strew’. Compare with stratum.

   Scrabble Points: 14

   • S

     1

   • U

     1

   • B

     3

   • S

     1

   • T

     1

   • R

     1

   • A

     1

   • T

     1

   • U

     1

   • M

     3

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