Standard Lemma guide

buoyancy

noun · 7 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK, US: /ˈbɔɪ.ən.si/
  • Australia: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: B OY1 AH0 N S IY0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The upward force on a body immersed or partly immersed in a fluid.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The ability of an object to stay afloat in a fluid.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Resilience or cheerfulness.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, countable, figuratively, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

irrepressible liveliness and good spirit

Definition source: Princeton WordNet 3.0

Examples

  • I admired his buoyancy and persistent good humor

Meaning relationships

Synonyms: irrepressibility

Antonyms: none provided

Broader terms: liveliness, life, spirit, sprightliness

5

noun

Meaning 5

the tendency to float in water or other liquid

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: tendency, inclination

6

noun

Meaning 6

the property of something weightless and insubstantial

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: airiness

Antonyms: none provided

Broader terms: lightness, weightlessness

7

noun

Meaning 7

cheerfulness that bubbles to the surface

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: perkiness

Antonyms: none provided

Broader terms: cheerfulness, blitheness

History

Etymology

From buoyant + -cy or buoy + -ancy.

Across languages

Translations

83 source translations are retained for this English entry.

  • Afrikaans: dryfvermoë — physics: upward force on an immersed body
  • Arabic: طَفْو (ṭafw) — physics: upward force on an immersed body
  • Arabic: طُفُوّ (ṭufuww) — physics: upward force on an immersed body
  • Bulgarian: плаваемост (plavaemost) — physics: upward force on an immersed body
  • Chinese Mandarin: 浮力 (fúlì) — physics: upward force on an immersed body
  • Czech: vztlak — physics: upward force on an immersed body
  • Danish: opdrift — physics: upward force on an immersed body
  • Dutch: opwaartse kracht — physics: upward force on an immersed body
  • Dutch: drijfvermogen — physics: upward force on an immersed body
  • Finnish: noste — physics: upward force on an immersed body
  • French: poussée d'Archimède — physics: upward force on an immersed body
  • French: flottabilité — physics: upward force on an immersed body
  • Georgian: ამომგდები ძალა (amomgdebi ʒala) — physics: upward force on an immersed body
  • Georgian: ამწევი ძალა (amc̣evi ʒala) — physics: upward force on an immersed body
  • German: Auftrieb — physics: upward force on an immersed body
  • Greek: άνωση (ánosi) — physics: upward force on an immersed body
  • Greek: άντωση (ántosi) — physics: upward force on an immersed body
  • Hindi: उत्प्लावकता (utplāvaktā) — physics: upward force on an immersed body
  • Hindi: उत्प्लावन (utplāvan) — physics: upward force on an immersed body
  • Hungarian: felhajtóerő — physics: upward force on an immersed body
  • Irish: buacacht — physics: upward force on an immersed body
  • Italian: spinta — physics: upward force on an immersed body
  • Italian: spinta statica — physics: upward force on an immersed body
  • Italian: forza ascensionale — physics: upward force on an immersed body
  • Italian: spinta idrostatica — physics: upward force on an immersed body
  • Japanese: 浮力 (furyoku) — physics: upward force on an immersed body
  • Latin: anosa — physics: upward force on an immersed body
  • Latin: antosa — physics: upward force on an immersed body
  • Latin: buoyancia — physics: upward force on an immersed body
  • Macedonian: пловност (plovnost) — physics: upward force on an immersed body
  • Māori: pūrewatanga — physics: upward force on an immersed body
  • Norwegian Bokmål: oppdrift — physics: upward force on an immersed body
  • Norwegian Nynorsk: oppdrift — physics: upward force on an immersed body
  • Polish: siła wyporu — physics: upward force on an immersed body
  • Polish: wypór — physics: upward force on an immersed body
  • Portuguese: impulsão — physics: upward force on an immersed body
  • Portuguese: empuxo — physics: upward force on an immersed body
  • Russian: подъёмная си́ла (podʺjómnaja síla) — physics: upward force on an immersed body
  • Russian: выта́лкивающая си́ла (vytálkivajuščaja síla) — physics: upward force on an immersed body
  • Serbo-Croatian: plovnost — physics: upward force on an immersed body
  • Spanish: sustentación hidráulica — physics: upward force on an immersed body
  • Spanish: impulso para arriba — physics: upward force on an immersed body
  • Spanish: empuje hacia arriba — physics: upward force on an immersed body
  • Spanish: sustentación fluídica — physics: upward force on an immersed body
  • Spanish: sustentamiento hidrodinámica — physics: upward force on an immersed body
  • Swedish: lyftkraft — physics: upward force on an immersed body
  • Thai: แรงลอยตัว (rɛɛng-lɔɔi-dtuua) — physics: upward force on an immersed body
  • Turkish: kaldırma kuvveti — physics: upward force on an immersed body
  • Welsh: hynofedd — physics: upward force on an immersed body
  • Afrikaans: dryfvermoë — ability to stay afloat
  • Bulgarian: плаваемост (plavaemost) — ability to stay afloat
  • Dutch: drijfvermogen — ability to stay afloat
  • Finnish: kelluvuus — ability to stay afloat
  • Georgian: ტივტივადობა (ṭivṭivadoba) — ability to stay afloat
  • German: Schwimmfähigkeit — ability to stay afloat
  • Greek: πλευστότητα (plefstótita) — ability to stay afloat
  • Ido: flotacemeso — ability to stay afloat
  • Irish: buacacht — ability to stay afloat
  • Italian: galleggiabilità — ability to stay afloat
  • Macedonian: пловност (plovnost) — ability to stay afloat
  • Norwegian Bokmål: flyteevne — ability to stay afloat
  • Russian: плаву́честь (plavúčestʹ) — ability to stay afloat
  • Spanish: flotabilidad — ability to stay afloat
  • Swedish: flytförmåga — ability to stay afloat
  • Turkish: batmazlık — ability to stay afloat
  • Ukrainian: пла́вність (plávnistʹ) — ability to stay afloat
  • Dutch: vrolijkheid — resilience or cheerfulness
  • Dutch: hilariteit — resilience or cheerfulness
  • Finnish: palautuvuus — resilience or cheerfulness
  • Finnish: hilpeys — resilience or cheerfulness
  • German: Belastbarkeit — resilience or cheerfulness
  • German: Fröhlichkeit — resilience or cheerfulness
  • German: Heiterkeit — resilience or cheerfulness
  • Greek: ανάταση (anátasi) — resilience or cheerfulness
  • Italian: vivacità — resilience or cheerfulness
  • Italian: ottimismo — resilience or cheerfulness
  • Japanese: 回復 — resilience or cheerfulness
  • Japanese: 快活 (kaikatsu) — resilience or cheerfulness
  • Manx: so-lhoobaght — resilience or cheerfulness
  • Russian: жизнера́достность (žiznerádostnostʹ) — resilience or cheerfulness
  • Russian: оптими́зм (optimízm) — resilience or cheerfulness
  • Russian: позити́вный настро́й (pozitívnyj nastrój) — resilience or cheerfulness
  • Spanish: optimismo — resilience or cheerfulness
Real reading context

buoyancy in complete knowledge articles