Etymograph

English

amper

Amper comes from Old English ampre ‘a dilated vein, varix, tumour, swelling’, from Proto-West Germanic *amprō ‘sorrel, dock’, and ultimately from Proto-Indo-European *amrós.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*amrósreconstructed
  2. Proto-Germanicc. 500 BCE–200 CE*ampraz‘sharp (in taste), sour’reconstructed
  3. Proto-West Germanicc. 200–500 CE*ampr‘sour’reconstructed
  4. Proto-West Germanic, derivedc. 200–500 CE*amprō‘sorrel, dock’reconstructed
  5. Old Englishc. 450–1150ampre‘a dilated vein, varix, tumour, swelling’
  6. Middle Englishc. 1150–1500same form
  7. Englishtodayamper

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*amrósreconstructed
  2. Proto-Germanicc. 500 BCE–200 CE*ampraz‘sharp (in taste), sour’reconstructed
  3. Proto-West Germanicc. 200–500 CE*ampr‘sour’reconstructed
  4. Proto-West Germanic, derivedc. 200–500 CE*amprō‘sorrel, dock’reconstructed
  5. Old Englishc. 450–1150ampre‘a dilated vein, varix, tumour, swelling’
  6. Middle Englishc. 1150–1500same form
  7. Englishtodayamper

Every English word from Proto-Indo-European *amrós

Today it means

noun A tumour, often accompanied by inflammation; pustule; varicose vein; pus; atter.

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

Etymograph / Proto-Indo-European *amrós / amper

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