Definition of "retractibility" []

• Same as retractability. (noun)

The Century Dictionary (Public Domain)

• "Long-time readers of this blog may recall that deep retractibility of land snails into their shells and the resulting conclusion that they build oversized shells have been the subjects of several posts for example, here."
• "While photographing B. minima one day last June, I also tested their retractibility into their shells."
• "His respiration became less easy; the retractibility of his organs no longer worked with as much ease as in the midst of an atmosphere more conveniently adapted for them."