retro-rocketn.

Brit.

/ˈrɛtrəʊˌrɒkɪt/, U.S.

/ˈrɛtroʊˌrɑkət/

Origin: Formed within English, by derivation. Etymons: retro- prefix, rocket n.⁵

Etymology: < retro- prefix + rocket n.⁵

1. An air-to-sea missile which is fired backwards at a speed equal to that of the aeroplane so that the two speeds cancel out, causing the missile to fall vertically. rare. Now disused.

ΘΚΠ

society > armed hostility > military equipment > weapon > missile > ammunition for firearms > [noun] > rocket

pound rocket1752

Congreve1809

rocket1915

retro-rocket1948

1948 W. Ley Rockets & Space Trav. 347 Retro-rocket, anti-submarine weapon fired from planes backward with velocity matching plane speed so that the weapon fell vertically... Retro-rockets sank the last ‘probable’ German submarine in the war, on April 30, 1945.

2. Astronautics and Science Fiction. An auxiliary rocket engine on a spacecraft which points in the forward direction so as to provide reverse thrust and slow any forward motion, as in manoeuvring or prior to landing.

ΘΚΠ

society > travel > air or space travel > a means of conveyance through the air > spacecraft > rocket > [noun] > types of rocket engine

retro-rocket1951

sustainer1951

vernier1958

retro-engine1960

posigrade rocket1961

retro1961

thruster1962

strap-on1966

1951 Pop. Sci. Sept. 107/2 They will launch during the coming months a rocket fitted with retro-rockets. These rockets, which fire forward, are intended to bring the landing speed to less than 20 m.p.h.

1962 J. Glenn in J. Glenn et al. Into Orbit 37 The engineers worked out three different ways of firing the small retro-rockets which would start us back towards the earth.

1975 Great Bend (Kansas) Tribune 20 July 1/6 The Soviets will fire retrorockets to settle their craft into the embrace of earth's atmosphere.

1992 B. Bova Mars (1993) 84 The retro-rockets fired fitful short bursts..as slowly, slowly the oversized saucer and teacup settled downward.

2008 Nature 11 Dec. 693/1 Little specks on the lander's legs were splashes of salty mud kicked up by its retro-rockets during the landing.

This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022).

单词	retro-rocket
释义	retro-rocketn. Brit. /ˈrɛtrəʊˌrɒkɪt/, U.S. /ˈrɛtroʊˌrɑkət/ Origin: Formed within English, by derivation. Etymons: retro- prefix, rocket n.⁵ Etymology: < retro- prefix + rocket n.⁵ 1. An air-to-sea missile which is fired backwards at a speed equal to that of the aeroplane so that the two speeds cancel out, causing the missile to fall vertically. rare. Now disused. ΘΚΠ society > armed hostility > military equipment > weapon > missile > ammunition for firearms > [noun] > rocket pound rocket1752 Congreve1809 rocket1915 retro-rocket1948 1948 W. Ley Rockets & Space Trav. 347 Retro-rocket, anti-submarine weapon fired from planes backward with velocity matching plane speed so that the weapon fell vertically... Retro-rockets sank the last ‘probable’ German submarine in the war, on April 30, 1945. 2. Astronautics and Science Fiction. An auxiliary rocket engine on a spacecraft which points in the forward direction so as to provide reverse thrust and slow any forward motion, as in manoeuvring or prior to landing. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > spacecraft > rocket > [noun] > types of rocket engine retro-rocket1951 sustainer1951 vernier1958 retro-engine1960 posigrade rocket1961 retro1961 thruster1962 strap-on1966 1951 Pop. Sci. Sept. 107/2 They will launch during the coming months a rocket fitted with retro-rockets. These rockets, which fire forward, are intended to bring the landing speed to less than 20 m.p.h. 1962 J. Glenn in J. Glenn et al. Into Orbit 37 The engineers worked out three different ways of firing the small retro-rockets which would start us back towards the earth. 1975 Great Bend (Kansas) Tribune 20 July 1/6 The Soviets will fire retrorockets to settle their craft into the embrace of earth's atmosphere. 1992 B. Bova Mars (1993) 84 The retro-rockets fired fitful short bursts..as slowly, slowly the oversized saucer and teacup settled downward. 2008 Nature 11 Dec. 693/1 Little specks on the lander's legs were splashes of salty mud kicked up by its retro-rockets during the landing. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < n.1948
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