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on-demand
on-demand adj. 
/ˌɒndᵻˈmand/, /ˌɔndiˈmænd/, /ˌɑndəˈmænd/, /ˌɑndiˈmænd/ done or available when required or requested; providing or requiring a commodity, service, etc., on demand.
Brit. /ˌɒndᵻˈmɑːnd/
, /ˌɒndᵻˈmɑːnd//ˌɒndᵻˈmand/U.S. /ˌɔndəˈmænd/
, /ˌɔndəˈmænd//ˌɔndiˈmænd//ˌɑndəˈmænd//ˌɑndiˈmænd/ΘΚΠ
the mind > possession > acquisition > [adjective] > obtained or acquired > able to be > easily
on (in) tap1483
to the fore1636
euporistical1657
push-buttona1935
on-demand1962
1962 Times 9 Apr. (British Oxygen Co. Suppl.) p. v Ready supply and on-demand delivery make sure your production goes smoothly.
1986 F. McGowan & C. Trengrove European Aviation (IFS) ii. ii. 30 The number of on-demand flyers who could be persuaded to purchase the..less attractive product.
2001 New Yorker 13 Aug. 81/3 A flexible, affordable, on-demand air-taxi system using existing small airports.
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