substrate

US /ˈsʌb.streɪt/
UK /ˈsʌb.streɪt/
"substrate" picture
1.

a substance or surface on which an organism grows or to which it is attached

:
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Algae grew on the rocky substrate.
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The bacteria were cultured on a nutrient-rich substrate.
:
mediumbasefoundationgroundsurface
2.

a substance on which an enzyme acts

:
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Lactose is the substrate for the enzyme lactase.
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The enzyme binds to its specific substrate to catalyze a reaction.
:
reactantreagent
3.

the material or medium on which a coating or layer is applied

:
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The paint adhered well to the prepared substrate.
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The thin film was deposited onto a glass substrate.
:
basefoundationsupportmedium