present participle of sustain

That sustains, supports or provides sustenance.

The process by which something is sustained or upheld.

plural of sustaining

plural of sustainer

The act of sustaining something.

A person or thing that sustains. / (aeronautics) A rocket engine that remains with a spacecraft during its ascent after the separation of the booster engines.

Third-person singular simple present indicative form of sustain

plural of sustain

Able to be sustained. / Able to be produced or sustained for an indefinite period without damaging the environment, or without depleting a resource; renewable.