IPA: /rɪˈtræktɪlɪti/
KK: /rɪˈtræktɪlɪti/
The quality or ability of something to be drawn back or pulled in.
The retractility of the material allows it to return to its original shape after being stretched.
Retractility → It is formed from "re-" (meaning back) and "tractus" (from the Latin "tractus", meaning to pull or draw). The suffix "-ility" (meaning the quality of being) indicates a state or condition. Thus, retractility refers to the quality of being able to be pulled back or drawn back.
Think of 'pulling back' ('tractus') and 'again' ('re-') to remember that retractility means the ability to be drawn back.