substrate

1. 1

   An underlying layer; a substratum.

2. 2

   The substance lining the bottom edge of an enclosure.

   • The substrate of an aquarium can affect the water's acidity.
   • Stream substrate affects fish longevity.
3. 3

   A substance acted upon, as by an enzyme.

4. 4

   A surface on which an organism grows, or to which an organism or an item is attached.

   • The rock surface of a rockpool is the substrate for a sessile organism such as a limpet.
5. 5

   A language that is replaced in a population by another language and that influences the language imposed on its speakers.

6. 6

   A metal which is plated with another metal which has different physical properties.

7. 7

   A surface to which a substance adheres.

syn. underlayer

1. 1

   To strew or lay under.obsoletetransitive

   • The melted glass being supported by the substrated sand.

1. 1

   Having very slight furrows.