Definify.com

Webster 1913 Edition

(r?-fl?ksˊ?-b?l′?-t?)

Noun.

[Cf. F.

réflexibilité

The quality or capability of being reflexible;

as, the

reflexibility

of the rays of light

Sir I. Newton.

Noun.

The quality of being reflexible or capable of being reflected; as the reflexibility of the rays of light.

reflexibility ‎(countable and uncountable, plural reflexibilities)

The quality or capability of being reflexible.
- 1809, The Philosophical Transactions of the Royal Society of London
  But it is essential to remark that these 2 effects take place in very different, and even opposite circumstances: and this indicates an important exception to Newton's assertion, on the unequal reflexibility of divers homogeneal rays.