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Hydrogel vs Undefined - What's the difference?

hydrogel | undefined |

As a noun hydrogel

is a colloid gel in which water is the continuous phase; they have a number of medical and industrial applications.

As an adjective undefined is

lacking a definition or value.

hydrogel

English

Noun

(wikipedia hydrogel) (en noun)
  • A colloid gel in which water is the continuous phase; they have a number of medical and industrial applications

    • undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined