sustainer

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/səˈsteɪnə/US:USA pronunciation: respellingUSA pronunciation: respelling(sə stā′nər)


WordReference Random House Unabridged Dictionary of American English © 2025
sus•tain•er  (sə stā′nər),USA pronunciation n. 
  1. a person or thing that sustains.
  2. Rocketry
    • any stage of a multistage rocket or guided missile that sustains flight after the burnout of the booster.
    • the rocket engine or cluster of engines contained in such a stage.
  • Middle English sosteynere. See sustain, -er1 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
sustainer / səˈsteɪnə/
  1. a rocket engine that maintains the velocity of a space vehicle after the booster has been jettisoned
'sustainer' also found in these entries (note: many are not synonyms or translations):
Vishnu

Forum discussions with the word(s) "sustainer" in the title:


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