Low-pressure /(?)/

Low·-pres·sure

Low-pressure

a.
  1. Having, employing, or exerting, a low degree of pressure.
  2. same as easygoing, 4; as, a low-pressure salesman.

Phrases & Compounds
Low-pressure steam engine
a steam engine in which low steam is used; often applied to a condensing engine even when steam at high pressure is used. See Steam engine.