underpressure

English

Etymology

under- +‎ pressure

Noun

underpressure (plural underpressures)

insufficient pressure; a marked drop in pressure
- 2007, Vladimir A. Rakov, Martin A. Uman, Lightning: Physics and Effects, page 378:
  The expanding-hot-channel mechanism predicts an initial positive pressure change (an overpressure) while the electrostatic-pressure-relief mechanism predicts an initial negative pressure change (an underpressure).

Antonyms

overpressure

Translations

insufficient pressure

Czech: podtlak m
Finnish: alipaine (fi)
German: Unterdruck (de) m
Swedish: undertryck (sv) n

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