retrorocket

[re-troh-rok-it]

ret·ro·rock·et

[re-troh-rok-it]
noun
a small, auxiliary rocket engine, forming a part of a larger rocket vehicle and having its exhaust nozzle pointed toward the direction of flight, for decelerating the larger rocket, separating one stage from another, etc.
Also, ret·ro-rock·et.


Origin:
1945–50; retro- + rocket
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Retrorocket is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
a scrap or morsel of food left at a meal.
Collins
World English Dictionary
retrorocket (ˈrɛtrəʊˌrɒkɪt)
 
n
Often shortened to: retro a small auxiliary rocket engine on a larger rocket, missile, or spacecraft, that produces thrust in the opposite direction to the direction of flight in order to decelerate the vehicle or make it move backwards

Collins English Dictionary - Complete & Unabridged 10th Edition
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