motorlessadj.
/ˈməʊtələs/, U.S. /ˈmoʊdərləs/ 1. Not equipped with or using a motor or engine.
ΘΚΠ
society > travel > air or space travel > [adjective] > type of flight
unmanned1544
motorless1897
flapping1899
cross-country1909
fly-through1983
society > travel > air or space travel > a means of conveyance through the air > [adjective] > motorless
motorless1897
1897 Aeronaut. Ann. 3 2 The development of the motorless air-sailer.
1908 Daily Report 21 Nov. 2/4 ‘Aerodone’ denotes a motorless flying machine, a glider.
1930 V. W. Pagé ABC of Gliding (1931) iii. 49 (caption) Outline Drawings..Showing How Bird Form is Approximated in Creations Intended for Motorless Flight.
1971 N. Ellison Brit. Gliders & Sailplanes 9 Today, nearly all motorless aircraft are sailplanes and capable of soaring flight, i.e. flying without loss of height or gaining height.
1991 G. Josipovici Big Glass 32 But what if the motorless machine is what it is all about?
2. Designating an area where motor traffic is prohibited. Also, of a road: having little or no traffic.
ΘΚΠ
society > travel > means of travel > route or way > way, path, or track > road > [adjective] > frequented by travellers or traffic > not
trafficless1844
motorless1970
1970 Daily Tel. 19 Sept. 12 Experiments with motorless zones in wild and remote country.
1972 Listener 21 Dec. 849 We should drive on motorless roads, praying that conditions would be good.
1997 Chicago Tribune 16 Feb. iii. 9/1 The U.S. Forest Service cordially bent a book of rules to allow four-wheelers and snowmobiles into its strictly observed motorless zone.
This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022).
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adj.1897