Substrate

n. substance upon which an enzyme acts (in a biochemical reaction); substratum, layer that lies beneath another

Substrate may mean:Substrate (aquarium), the material used in the bottom of an aquariumSubstrate (biochemistry), a molecule which is acted upon by an enzymeSubstrate (materials science), the material on which a process is conductedSubstrate (biology), the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attachedSubstrate (chemistry), the catalytic material upon which chemical species reactSubstrate (marine biology), the earthy material that exists in the bottom of a marine habitat, like dirt, rocks, sand, or gravelSubstrate (printing), the base material that images will be printed ontoThe stratum on which another geologic stratum lies Substrate may also refer to:Wafer (electronics), material upon which semiconductor devices are fabricatedPrinted circuit board (electronics), or the electrically insulating portion of a PCB structureSubstratum, in linguistics, a language that influences but is supplanted by a second languageNeural substrate, in neuroscience, the set of brain structures that underlies a specific behavior or psychological state
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Noun
1. the substance acted upon by an enzyme or ferment
(hypernym) substance, matter
2. any stratum lying underneath another
(synonym) substratum
(hypernym) stratum

n. substratum, basis, substrate, layer with in underneath another layer

(v. t.)
To strew or lay under anything.
  

(n.)
A substratum.
  

(a.)
Having very slight furrows.