heavier-than-airadj.

Etymology: Previous versions of the OED give the stress as: ˌheavier-than-ˈair.

Aeronautics.

Designating a flying-machine whose weight is greater than the weight of the air which it displaces, and whose lift is not dependent on light gases; also applied to the use of such a machine or machines in flight.

ΘΚΠ

society > travel > air or space travel > a means of conveyance through the air > [adjective] > lighter or heavier than air

lighter-than-air1901

heavier-than-air1903

1870 tr. Marion's Wonderful Balloon Ascents ii. ix. 162 To form a ‘Free Association for Aerial Navigation by means of Machines heavier than Air’.

1879 Encycl. Brit. IX. 309/2 Weight, however paradoxical it may appear, is necessary to flight. Everything which flies is vastly heavier than the air.]

1903 Westm. Gaz. 18 Sept. 9/3 The only example of the heavier-than-air machine.

1904 Chambers's Jrnl. 1 Oct. 699/1 All who have sought to sail the skies divide themselves..into..the ‘lighter-than-airites’ and the ‘heavier-than-airites’.]

1908 H. G. Wells War in Air viii. §2 The most efficient heavier-than-air fliers.

1909 A. Berget Conquest of Air ii. ii. 155 Many persons ask aviators why their ‘heavier-than-air’ apparatus is not provided with parachutes.

1909 Flight 19 June 356/1 Any heavier-than-air type of machine.

1909 Daily Chron. 9 Sept. 1/6 For a long time, Mr. Cody has practised heavier-than-air flying on Laffan's Plain.

1927 C. L. M. Brown Conquest of Air 21 When heavier-than-air flight was an accomplished reality.

1961 C. B. Smith Testing Time ii. 27 The War Office instructed O'Gorman to concentrate entirely on airships. They admitted that ‘heavier-than-air dirigibles’ might one day have military uses.

This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2019).

单词	heavier-than-air
释义	heavier-than-airadj. Etymology: Previous versions of the OED give the stress as: ˌheavier-than-ˈair. Aeronautics. Designating a flying-machine whose weight is greater than the weight of the air which it displaces, and whose lift is not dependent on light gases; also applied to the use of such a machine or machines in flight. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > [adjective] > lighter or heavier than air lighter-than-air1901 heavier-than-air1903 1870 tr. Marion's Wonderful Balloon Ascents ii. ix. 162 To form a ‘Free Association for Aerial Navigation by means of Machines heavier than Air’. 1879 Encycl. Brit. IX. 309/2 Weight, however paradoxical it may appear, is necessary to flight. Everything which flies is vastly heavier than the air.] 1903 Westm. Gaz. 18 Sept. 9/3 The only example of the heavier-than-air machine. 1904 Chambers's Jrnl. 1 Oct. 699/1 All who have sought to sail the skies divide themselves..into..the ‘lighter-than-airites’ and the ‘heavier-than-airites’.] 1908 H. G. Wells War in Air viii. §2 The most efficient heavier-than-air fliers. 1909 A. Berget Conquest of Air ii. ii. 155 Many persons ask aviators why their ‘heavier-than-air’ apparatus is not provided with parachutes. 1909 Flight 19 June 356/1 Any heavier-than-air type of machine. 1909 Daily Chron. 9 Sept. 1/6 For a long time, Mr. Cody has practised heavier-than-air flying on Laffan's Plain. 1927 C. L. M. Brown Conquest of Air 21 When heavier-than-air flight was an accomplished reality. 1961 C. B. Smith Testing Time ii. 27 The War Office instructed O'Gorman to concentrate entirely on airships. They admitted that ‘heavier-than-air dirigibles’ might one day have military uses. This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2019). < adj.1903
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