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Callus vs Undefined - What's the difference?

callus | undefined |

As a noun callus

is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As a verb callus

is to form such hardened tissue.

As an adjective undefined is

lacking a definition or value.

callus

English

(wikipedia callus)

Noun

(en-noun)
  • A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.
  • * 2011 ,David Foster Wallace The Pale King , page 17:
    • Sylvanshine had once been on a first date with a Xerox rep who had complex and slightly repulsive patterns of callus on her fingers from playing the banjo semi-professionally
  • The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistency, but is ultimately converted into true bone and unites the fragments into a single piece.
  • (botany) The new formation over the end of a cutting, before it puts out rootlets.

    • Verb

  • To form such hardened tissue

    • 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