Retractable (adjective)

1. Capable of being pulled back or retracted.
2. Capable of being withdrawn or cancelled.
3. Capable of being reduced in size or length.

Origin:

Derived from the latin word 'retractare' meaning 'to draw back' or 'to pull back', the word has been in use since the 16th century.

Examples:

1. The designer invented a retractable pen that could be compact and convenient to carry in a pocket or purse.
2. The airline allowed passengers to retract their flight booking and receive a full refund up to 24 hours before departure.
3. The architect designed a retractable roof for the stadium that could be opened or closed depending on the weather conditions.
4. The surgeon used a retractable scalpel for the delicate and precise incision in the patient's skin.
5. The engineer developed a retractable landing gear for the aircraft that could be extended or retracted during takeoff and landing.