Etymograph

English

Triangulum

Triangulum comes from Latin triangulum ‘triangle’, from angulus ‘a corner’, and ultimately from Proto-Indo-European *h₂eng- ‘curve, bend’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eng-‘curve, bend’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*h₂engulosreconstructed
  3. Proto-Italicc. 1500–700 BCE*angulosreconstructed
  4. Latinc. 75 BCE–200 CEangulus‘a corner’
  5. Latin, derivedc. 75 BCE–200 CEtriangulus‘three-cornered, triangular’
  6. Latin, derivedc. 75 BCE–200 CEtriangulum‘triangle’
  7. EnglishtodayTriangulum

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eng-‘curve, bend’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*h₂engulosreconstructed
  3. Proto-Italicc. 1500–700 BCE*angulosreconstructed
  4. Latinc. 75 BCE–200 CEangulus‘a corner’
  5. Latin, derivedc. 75 BCE–200 CEtriangulus‘three-cornered, triangular’
  6. Latin, derivedc. 75 BCE–200 CEtriangulum‘triangle’
  7. EnglishtodayTriangulum

Linked words

through Proto-Indo-European *h₂eng- ‘curve, bend’

ankle, 10 more

through Latin angulus ‘a corner’

angle, angular, 6 more

Today it means

name An autumn constellation of the northern sky whose brightest three stars form a small triangle. It lies near Perseus, between Aries and Andromeda.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *h₂eng- / Triangulum

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