Standard Lemma guide

surfactant

noun · 3 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.

  • /səɹˈfæktənt/
  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: S ER0 F AE1 K T AH0 N T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A surface-active agent, or wetting agent, capable of reducing the surface tension of a liquid; typically organic compounds having a hydrophilic “head” and a hydrophobic “tail”.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: tenside

Antonyms: none provided

2

noun

Meaning 2

A lipoprotein in the tissues of the lung that reduces surface tension and permits more efficient gas transport.

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: wetting agent, wetter, surface-active agent

Antonyms: none provided

Broader terms: chemical agent

Narrower terms: emulsifier, detergent

History

Etymology

Blend of surface-active + agent.

Across languages

Translations

45 source translations are retained for this English entry.

  • Arabic: عَامِل سَطْحِيّ (ʕāmil saṭḥiyy) — surface active agent
  • Bulgarian: повърхностно-акти́вно вещество́ (povǎrhnostno-aktívno veštestvó) — surface active agent
  • Chinese Mandarin: 表面活性劑 /表面活性剂 (biǎomiàn huóxìngjì) — surface active agent
  • Chinese Mandarin: 界面活性劑 /界面活性剂 (jièmiàn huóxìngjì) — surface active agent
  • Czech: tenzid — surface active agent
  • Czech: surfaktant — surface active agent
  • Finnish: tensidi — surface active agent
  • Finnish: pinta-aktiivinen aine — surface active agent
  • Finnish: surfaktantti — surface active agent
  • French: tensioactif — surface active agent
  • French: mouillant — surface active agent
  • French: surfactant — surface active agent
  • French: surfactif — surface active agent
  • German: Tensid — surface active agent
  • German: Netzmittel — surface active agent
  • German: Benetzungsmittel — surface active agent
  • German: Dispergiermittel — surface active agent
  • German: Detergens — surface active agent
  • German: grenzflächenaktiver Stoff — surface active agent
  • Italian: tensioattivo — surface active agent
  • Italian: surfattante — surface active agent
  • Italian: surfactante — surface active agent
  • Japanese: 界面活性剤 (kaimen-kasseizai) — surface active agent
  • Kazakh: беттік-активті заттек (bettık-aktivtı zattek) — surface active agent
  • Korean: 계면활성제 (gyemyeonhwalseongje) — surface active agent
  • Persian: ماده فعال سطحی — surface active agent
  • Polish: surfaktant — surface active agent
  • Portuguese: surfactante — surface active agent
  • Portuguese: tensioativo — surface active agent
  • Portuguese: tensoativo — surface active agent
  • Russian: пове́рхностно-акти́вное вещество́ (povérxnostno-aktívnoje veščestvó) — surface active agent
  • Slovene: omočilo — surface active agent
  • Spanish: surfactante — surface active agent
  • Spanish: tensoactivo — surface active agent
  • Spanish: tensioactivo — surface active agent
  • Swedish: tensid — surface active agent
  • Swedish: surfaktant — surface active agent
  • Thai: สารลดแรงตึงผิว (sǎan-lót-rɛɛng-dtʉng-pǐu) — surface active agent
  • Turkish: sürfektan — surface active agent
  • Vietnamese: chất hoạt động bề mặt — surface active agent
  • Finnish: surfaktantti — lipoprotein that facilitates gas transport in the lungs
  • Japanese: 肺表面活性物質 (hai-hyōmen-kassei-busshitsu) — lipoprotein that facilitates gas transport in the lungs
  • Polish: surfaktant — lipoprotein that facilitates gas transport in the lungs
  • Swedish: surfaktant — lipoprotein that facilitates gas transport in the lungs
  • Turkish: sürfektan — lipoprotein that facilitates gas transport in the lungs
Real reading context

surfactant in complete knowledge articles