ullage rocket

noun

a small hydrogen peroxide rocket engine that produces sufficient acceleration to keep propellants in their places when the main rocket is shut off

Nearby words

  1. ulfila,
  2. ulfilas,
  3. ulhasnagar,
  4. uliginous,
  5. ullage,
  6. ullswater,
  7. ulluco,
  8. ulm,
  9. ulmaceous,
  10. ulna

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012