- a person or thing that sustains.
- 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.
Origin of sustainer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sustainer
A suffocating silence filled the Sustainer Theater on LSA Anaconda in Iraq.The Names You Don’t Hear: Nearly 200 Women Have Died in Iraq and Afghanistan
May 26, 2014
Light is the sustainer of motion both in the earth and in the blood.A Budget of Paradoxes, Volume II (of II)
Augustus de Morgan
They unite in the worship of one divine Creator and Sustainer of the universe.The Coming Race
Edward Bulwer Lytton
He says also that He is not a creature, but the Sustainer of all things.The Expositor's Bible: The Epistle to the Hebrews
Thomas Charles Edwards
At all events, "God the Invisible King" is not the creator and sustainer of the universe.God and Mr. Wells
To whom belongs this rôle of educator, protector, sustainer?Elements of Morals
- a rocket engine that maintains the velocity of a space vehicle after the booster has been jettisoned