Etymograph

English

tenside

Tenside comes from Latin tensio ‘stretching, stretching out, extension’, and goes back to Proto-Indo-European *téndeti.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*téndeti1reconstructed
  2. Proto-Italicc. 1500–700 BCE*tendō1‘to stretch’reconstructed
  3. Latinc. 75 BCE–200 CEtendō2‘to stretch, stretch out, distend, extend’
  4. Latinc. 75 BCE–200 CEtensio3as tēnsiō‘stretching, stretching out, extension’
  5. Englishearliest quotation 1993tenside3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin tendo
  2. 2 Wiktionary, Latin tensio
  3. 3 Wiktionary, English tenside
  4. Earliest quotation in Wiktionary’s entry: 1993, Juraj Tölgyessy, Chemistry and Biology of Water: “Another large group of organic substances polluting the hydrosphere…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*téndetiWiktionary, Latin tendoreconstructed
  2. Proto-Italicc. 1500–700 BCE*tendōWiktionary, Latin tendo‘to stretch’reconstructed
  3. Latinc. 75 BCE–200 CEtendōWiktionary, Latin tensio‘to stretch, stretch out, distend, extend’
  4. Latinc. 75 BCE–200 CEtensioWiktionary, English tensideas tēnsiō‘stretching, stretching out, extension’
  5. Englishearliest quotation 1993tensideWiktionary, English tenside. Earliest quotation in Wiktionary’s entry: 1993, Juraj Tölgyessy, Chemistry and Biology of Water: “Another large group of organic substances polluting the hydrosphere…”

Linked words

through Proto-Italic *tendō ‘to stretch’

pretend, extend, attendance, intend, tender, intentional, contend, pretense, inattention, entendre, portend, 28 more

through Latin tendō ‘to stretch, stretch out, distend, extend’

attention, tend, extent, intention, extensive, extension, contention, tense, tempt, tensor, entente, extensible, portent, detent, 41 more

through Latin tensio ‘stretching, stretching out, extension’

hypertension, hypotension, pretension, 6 more

Today it means

noun A surfactant.

Sources

Sources: Wiktionary, “tenside”; the older steps come from the Wiktionary entries for Latin tendo, Latin tensio. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *téndeti / tenside

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