different between vacuum vs pressure

English

Alternative forms

• vacuüm (rare)

Etymology

From Latin vacuum (“an empty space, void”), noun use of neuter of vacuus (“empty”), related to vacare (“be empty”).

Pronunciation

• IPA^(key): /?væ.kju?m/, /?væ.kju?.?m/

Noun

vacuum (plural vacuums or (rare) vacua) (see usage notes)

1. A region of space that contains no matter.
2. (plural only "vacuums") A vacuum cleaner.
3. The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.

   a vacuum of 26 inches of mercury, or 13 pounds per square inch

4. (physics) A spacetime having tensors of zero magnitude

Usage notes

• The Latin in vacuo is sometimes used instead of in a vacuum (in free space).

Synonyms

• (a region of space that contains no matter): vacancy, void
• (vacuum cleaner): hoover (British)

Antonyms

• (region of space that contains no matter): plenum

Derived terms

Related terms

Translations

Verb

vacuum (third-person singular simple present vacuums, present participle vacuuming, simple past and past participle vacuumed)

1. (transitive) To clean (something) with a vacuum cleaner.
2. (intransitive) To use a vacuum cleaner.
3. (transitive, databases) To optimise a database or database table by physically removing deleted tuples.

Synonyms

• (transitive sense): to hoover (British)
• (intransitive sense): to do the hoovering, to hoover (British)

Translations

French

Pronunciation

• IPA^(key): /va.k??m/

Noun

vacuum m (plural vacuums)

1. vacuum (space containing no matter)

Synonyms

• vide

Descendants

• Turkish: vakum

Further reading

• “vacuum” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Latin

Adjective

vacuum

1. accusative neuter singular of vacuus

Romanian

Etymology

From Latin vacuum

Noun

vacuum n (plural vacuumuri)

1. vacuum

Declension

Spanish

Alternative forms

• vácuum (recommended)

Noun

vacuum m (plural vacuums)

1. vacuum

English

Etymology

From Old French, from Latin press?ra.

Pronunciation

• enPR: pr?sh?-?(r), IPA^(key): /?p????(?)/
  • (UK) IPA^(key): [?p???.?(?)]
  • (US) IPA^(key): [?p???.?]
• Rhymes: -???(?)
• Hyphenation: pres?sure

Noun

pressure (countable and uncountable, plural pressures)

1. A pressing; a force applied to a surface.

   Apply pressure to the wound to stop the bleeding.

2. A contrasting force or impulse of any kind

   the pressure of poverty; the pressure of taxes; the pressure of motives on the mind; the pressure of civilization.
3. Distress.
   • 1649, Eikon Basilike

     My people's pressures are grievous.

   • October 31, 1708, Francis Atterbury, a sermon preach'd before the Queen at St. James's

     In the midst of his great troubles and pressures.
4. Urgency

   the pressure of business

5. (obsolete) Impression; stamp; character impressed.
6. (physics) The amount of force that is applied over a given area divided by the size of this area.

Synonyms

• (distress): affliction, grievance
• (urgency): press

Derived terms

Translations

Verb

pressure (third-person singular simple present pressures, present participle pressuring, simple past and past participle pressured)

1. (transitive) To encourage or heavily exert force or influence.

   Do not let anyone pressure you into buying something you do not want.

Translations

See also

• (units of pressure): pascal (Pa); bar, barye (Ba); pounds per square inch (psi, lbf/in², lb/in²), torr, mmHg, atmosphere (atm)

Anagrams

• perusers

French

Pronunciation

• Homophones: pressurent, pressures

Verb

pressure

1. first-person singular present indicative of pressurer
2. third-person singular present indicative of pressurer
3. first-person singular present subjunctive of pressurer
4. third-person singular present subjunctive of pressurer
5. second-person singular imperative of pressurer

Latin

Participle

press?re

1. vocative masculine singular of press?rus

Old French

Etymology

Borrowed from Latin press?ra.

Noun

pressure f (oblique plural pressures, nominative singular pressure, nominative plural pressures)

1. pressure (action or result of pressing)

Descendants

• ? English: pressure