equilibrium

See also: Equilibrium and équilibrium

English

Alternative forms

• æquilibrium (dated)

Etymology

From Latin aequilībrium, from equal + lībra (“balance”).

Pronunciation

• IPA^(key): /ɛkwɪˈlɪbɹɪəm/, /iːkwɪˈlɪbɹɪəm/

• Audio (southern England):

  (file)

Noun

equilibrium (plural equilibriums or equilibria)

1. The condition of a system in which competing influences are balanced, resulting in no net change.
   • 1733, Philip Miller, “HYDROSTATICKS”, in The Gardeners Dictionary: […], 2nd edition, volume I, London: […] C[harles] Rivington, […], →OCLC, column 1:

     To Hydroſtaticks belong whatever relates to the Gravities and Equilibria of Liquors; with the Art of weighing Bodies in Water, in order to eſtimate the ſpecifick Gravities.

   • 1999, The Matrix, Agent Smith speech

     Every mammal on this planet instinctively develops a natural equilibrium with the surrounding environment but you humans do not. You move to an area and you multiply and multiply until every natural resource is consumed and the only way you can survive is to spread to another area. There is another organism on this planet that follows the same pattern. Do you know what it is? A virus.

   Synonyms: balance, stability

   Antonyms: disequilibrium, imbalance, instability

2. Mental balance.

   Synonym: sanity

   Antonyms: insanity, instability, madness

3. (chemistry) The state of a reaction in which the rates of the forward and reverse reactions are the same.
4. (physics) The state of a body at rest or in uniform motion in which the resultant of all forces on it is zero.
   • 1943 May and June, “Notes and News: Effective Locomotive "Ack-Ack" Fire”, in Railway Magazine, page 180:

     It now appears that the locomotive did not blow up, as was commonly stated at the time, but that the aeroplane flew so low as to come into contact with the dome of the engine, knocking it off. It was the combination of the impact and the uprush of steam that so disturbed the equilibrium of the raider as to cause it to crash.

   Antonyms: disequilibrium, non-equilibrium

Hypernyms

• (in physics): stasis

Hyponyms

• (in physics): heat death (thermodynamic equilibrium state of maximum entropy)

Derived terms

• disequilibrium
• dynamic equilibrium
• equilibrist
• Nash equilibrium
• neutral equilibrium
• stable equilibrium
• static equilibrium
• unstable equilibrium

 

Related terms

• equilibrate
• equilibrize

Translations

condition of a system in which competing influences are balanced — see also balance

• Azerbaijani: tarazlıq (az), müvazinət (az)
• Bulgarian: равнове́сие (bg) n (ravnovésie)
• Catalan: equilibri (ca) m
• Chinese:

  Cantonese: 平衡 (ping⁴ hang⁴)

  Mandarin: 平衡 (zh) (pínghéng)

  Min Nan: 平衡 (zh-min-nan) (pêng-hêng, pêⁿ-hêng, pîⁿ-hêng)

• Czech: rovnováha (cs) f, ekvilibrium n
• Danish: ligevægt c
• Dutch: evenwicht (nl) n
• Esperanto: ekvilibro (eo)
• Estonian: tasakaal (et)
• Finnish: tasapaino (fi)
• French: équilibre (fr) m
• German: Gleichgewicht (de) n, Balance (de) f
• Greek: ισορροπία (el) f (isorropía)
• Hebrew: אִזּוּן m ('izuun), סימביוזה (he) f (symbyoza)
• Hindi: साम्यावस्था (hi) f (sāmyāvasthā)
• Hungarian: egyensúly (hu)
• Ido: equilibro (io)
• Italian: equilibrio (it) m
• (deprecated template usage) {{trans-mid}}
• Japanese: 均衡 (ja) (きんこう, kinkō), バランス (ja) (baransu), 釣り合い (つりあい, tsuriai), 平衡 (ja) (へいこう, heikō)
• Korean: 평형(平衡) (ko) (pyeonghyeong)
• Kurdish:

  Central Kurdish: ھاوسەنگ (ckb) (hawseng)

• Latin: aequilībrium (la) n
• Latvian: līdzsvars m
• Malay: keseimbangan (ms)
• Maori: ōritetanga, tauritenga
• Norwegian: ekvilibrium n, likevekt (no) m
• Polish: równowaga (pl) f
• Portuguese: equilíbrio (pt) m
• Romanian: echilibru (ro) n, stabilitate (ro) f
• Russian: равнове́сие (ru) n (ravnovésije), бала́нс (ru) m (baláns)
• Scottish Gaelic: co-chothrom m
• Spanish: equilibrio (es) m
• Swedish: jämvikt (sv) c
• Tagalog: katiningan
• Turkish: denge (tr), muvazene (tr) (obsolescent)
• Ukrainian: рівнова́га f (rivnováha)
• Welsh: cydbwysedd m

physics: state of a body at rest or in uniform motion in which the resultant of all forces on it is zero

• Bulgarian: равнове́сие (bg) n (ravnovésie)
• Catalan: equilibri (ca) m
• Chinese:

  Cantonese: 平衡 (ping⁴ hang⁴)

  Mandarin: 平衡 (zh) (pínghéng)

  Min Nan: 平衡 (zh-min-nan) (pêng-hêng, pêⁿ-hêng, pîⁿ-hêng)

• Czech: rovnováha (cs) f, ekvilibrium n
• Danish: ligevægt c
• Dutch: evenwicht (nl) n
• Estonian: tasakaal (et)
• Finnish: tasapaino (fi)
• French: équilibre (fr) m
• (deprecated template usage) {{trans-mid}}
• German: Gleichgewicht (de) n
• Greek: ισορροπία (el) f (isorropía)
• Hebrew: שִׁוּוּי מִּשְׁקָל (he) m (shivvuy mishqal)
• Italian: equilibrio (it) m
• Japanese: 平衡 (ja) (へいこう, heikō)
• Kazakh: тепе-теңдік (tepe-teñdık)
• Korean: 평형(平衡) (ko) (pyeonghyeong)
• Norwegian: ekvilibrium n, likevekt (no) m
• Polish: równowaga (pl) f
• Portuguese: equilíbrio (pt) m
• Romanian: echilibru (ro) n, stabilitate (ro) f
• Russian: равнове́сие (ru) n (ravnovésije)
• Spanish: equilibrio (es) m
• Tagalog: katiningan
• Turkish: denge (tr), muvazene (tr) (obsolescent)

chemistry: state of a reaction in which the rates of the forward and reverse reactions are the same

• Bulgarian: равнове́сие (bg) n (ravnovésie)
• Chinese:

  Cantonese: 平衡 (ping⁴ hang⁴)

  Mandarin: 平衡 (zh) (pínghéng)

  Min Nan: 平衡 (zh-min-nan) (pêng-hêng, pêⁿ-hêng, pîⁿ-hêng)

• Czech: rovnováha (cs) f, ekvilibrium n
• Danish: ligevægt c
• Estonian: tasakaal (et)
• Finnish: tasapaino (fi)
• French: équilibre (fr) m
• German: Gleichgewicht (de) n
• Greek: ισορροπία (el) f (isorropía)
• Hebrew: שִׁוּוּי מִּשְׁקָל (he) m (shivvuy mishqal), אִזּוּן m ('izuun)
• Italian: equilibrio (it) m
• (deprecated template usage) {{trans-mid}}
• Japanese: 平衡 (ja) (へいこう, heikō)
• Korean: 평형(平衡) (ko) (pyeonghyeong)
• Kurdish:

  Central Kurdish: ھاوسەنگ (ckb) (hawseng)

• Maori: tauritenga
• Norwegian: ekvilibrium n, likevekt (no) m
• Polish: równowaga (pl) f
• Portuguese: equilíbrio (pt) m
• Romanian: echilibru (ro) n
• Russian: равнове́сие (ru) n (ravnovésije)
• Spanish: equilibrio (es) m
• Tagalog: katiningan
• Turkish: denge (tr), muvazene (tr) (obsolescent)

mental balance

• Bulgarian: равновесие (bg) n (ravnovesie)
• Danish: sindsligevægt c
• Dutch: evenwicht (nl) n
• Estonian: vaimne tasakaal
• Finnish: tasapaino (fi)
• French: équilibre (fr) m
• German: Ausgeglichenheit (de) f
• Greek: διανοητική αταραξία f (dianoïtikí ataraxía), ψυχική αταραξία f (psychikí ataraxía), ισορροπία (el) f (isorropía), ηρεμία (el) f (iremía)
• Hebrew: אִזּוּן m ('izuun)
• (deprecated template usage) {{trans-mid}}
• Norwegian: sinnslikevekt m
• Polish: równowaga psychiczna f
• Portuguese: equilíbrio (pt) m
• Romanian: echilibru (ro) n, echilibru mintal n (spiritual), ponderație (ro) f
• Russian: равнове́сие (ru) n (ravnovésije)
• Spanish: equilibrio (es) m
• Tagalog: katiningan
• Turkish: itidal (tr)