Etymograph

English

concentric

Concentric comes from Medieval Latin concentricus, from Latin centrum ‘circle, center’, and ultimately from Proto-Indo-European *ḱéntrom ‘pointed tool’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*ḱéntrom‘pointed tool’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*kéntronreconstructed
  3. Ancient Greekc. 800–300 BCEκέντρον‘sharp point’
  4. Latinc. 75 BCE–200 CEcentrum‘circle, center’
  5. Medieval Latinc. 600–1500concentricus
  6. Middle Frenchc. 1400–1600concentrique
  7. Middle Englishc. 1150–1500concentrik
  8. Englishearliest quotation 2020concentric

attested reconstructed ? uncertain or disputed deepest recorded ancestor

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*ḱéntrom‘pointed tool’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*kéntronreconstructed
  3. Ancient Greekc. 800–300 BCEκέντρον‘sharp point’
  4. Latinc. 75 BCE–200 CEcentrum‘circle, center’
  5. Medieval Latinc. 600–1500concentricus
  6. Middle Frenchc. 1400–1600concentrique
  7. Middle Englishc. 1150–1500concentrik
  8. Englishearliest quotation 2020concentric

Earliest quotation: 2020, Tim Dunn, Great railway bores of our time!: “Seven huge concentric semi-circular rings of stone surround the…”

Formed from con- + -centric

Latin cum ‘with’

English con-

Linked words

through Ancient Greek κέντρον ‘sharp point’

kendra, eccentric, alcantara, cento, centrale, 15 more

through Latin centrum ‘circle, center’

center, central, centre, centrum, 1 more

Today it means

adj Having a common center.

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

Etymograph / Proto-Indo-European *ḱéntrom / concentric

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