What is "invertible"

Invertible \In*vert"i*ble\, a. [From Invert.]

1. Capable of being inverted or turned inside out.

2. (Chem.) Capable of being changed or converted; as, invertible sugar.

Invertible \In*vert"i*ble\, a. [Pref. in- not + L. vertere to turn + -ible.] Incapable of being turned or changed.

An indurate and invertible conscience.
--Cranmer.

a. 1 Capable of being inverted or turned. 2 (context mathematics especially of a function or matrix English) Able to be inverted, having an inverse. 3 (context chemistry English) Capable of being changed or converted.

adj. having an additive or multiplicative inverse [ant: non-invertible]