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Extensible vs Retractable - What's the difference?

extensible | retractable |

As adjectives the difference between extensible and retractable

is that extensible is capable of being extended while retractable is capable of being retracted; retractile.

As a noun retractable is

a retractable pen.

extensible

English

Adjective

(en adjective)
  • Capable of being extended.

    • Synonyms

    * extendible * extendable

    Antonyms

    * inextensible

    Related terms

    * extensibility

    retractable

    English

    Adjective

    (-)
  • Capable of being retracted; retractile.

    • See also

    * pull-down

    Noun

    (en noun)
  • A retractable pen.
  • * 1979 , Douglas Adams, The Hitchhiker's Guide to the Galaxy
    • Somewhere in the cosmos, he said,