Webster's Revised Unabridged Dictionary · 1913

Disengagement

Disengagement , noun

[Prefix dis- + engagement: compare French désengagement.]

1.
The act of disengaging or setting free, or the state of being disengaged.
It is easy to render this disengagement of caloric and light evident to the senses. — Transl. of Lavoisier
A disengagement from earthly trammels. — Sir W. Jones
2.
Freedom from engrossing occupation; leisure.
Disengagement is absolutely necessary to enjoyment. — Bp. Butler