View synonyms for sustainer

sustainer

[ suh-stey-ner ]

Phonetic (Standard)IPA

noun

a person or thing that sustains.
Rocketry.
1. any stage of a multistage rocket or guided missile that sustains flight after the burnout of the booster.
2. the rocket engine or cluster of engines contained in such a stage.

First recorded in 1350–1400, sustainer is from the Middle English word sosteynere. See sustain, -er ¹

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