substrate

The definition of a substrate is a layer underneath, or the surface where an organism grows.

(noun)

An example of a substrate is a surface where an enzyme acts.

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See substrate in Webster's New World College Dictionary

noun

  1. substratum
  2. Biochem. a substance acted upon, as by an enzyme
  3. Biol., Bacteriology medium ()

See substrate in American Heritage Dictionary 4

noun
  1. The material or substance on which an enzyme acts.
  2. Biology A surface on which an organism grows or is attached.
  3. An underlying layer; a substratum.
  4. Linguistics An indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population.

Origin:

Origin: From substratum

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