An advocacy group.

plural of pressure washer

The pressure equivalent to that exerted on a surface by a column of water of a given height.

plural of pressure group

plural of pressure vessel

A valve designed to open when subjected to a given amount of pressure. Also used figuratively.

plural of pressure ulcer

(psychology) speech that is pressured, as in pressure of speech

(psychology, psychiatry) a proclivity to speak with rapidity and intensity without apparent motivation, commonly seen as a marker for a manic episode of bipolar disorder

plural of pressure gauge