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self-disengaging
self-disengaging adj. 
/ˌsɛlfdɪsᵻŋˈɡeɪdʒɪŋ/, /ˌsɛlfdɪsɛnˈɡeɪdʒɪŋ/, /ˌsɛlfdɪsɛŋˈɡeɪdʒɪŋ/, /ˌsɛlfˌdɪsɛnˈɡeɪdʒɪŋ/
Brit. /ˌsɛlfdɪs(ᵻ)nˈɡeɪdʒɪŋ/
, /ˌsɛlfdɪs(ᵻ)nˈɡeɪdʒɪŋ//ˌsɛlfdɪsᵻŋˈɡeɪdʒɪŋ//ˌsɛlfdɪsɛnˈɡeɪdʒɪŋ//ˌsɛlfdɪsɛŋˈɡeɪdʒɪŋ/U.S. /ˌsɛlfˌdɪsᵻnˈɡeɪdʒɪŋ/
, /ˌsɛlfˌdɪsᵻnˈɡeɪdʒɪŋ//ˌsɛlfˌdɪsɛnˈɡeɪdʒɪŋ/ΚΠ
1814 R. Buchanan Pract. Ess. Mill-wk. iv. 89 Some good instances of self-disengaging apparatus may be seen in looms driven by power.
1911 Machinery Jan. 409/1 The carriage handwheel is self disengaging, so that it does not revolve when the power feed is engaged.
2013 Alfa Romeo Spider Owners Work Man. 160/1 Bendix pinion, a self-engaging and self-disengaging drive on a starter motor shaft.
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