Etymology

perfect number

Today it means: A number that is the sum of all of its divisors except itself. Full definition →

Latin numerus perfectus ← Ancient Greek τέλειος
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The story

  1. Ancient Greek · derived fromτέλειος
  2. Latin · calque ofnumerus perfectus
  3. English todayperfect number

Calque of Latin numerus perfectus, with this use of perfectus itself a semantic loan from Ancient Greek τέλειος (téleios).

Words from the same roots

Ancient Greekτέλειος all →

teleio-teleo-

Etymology from Wiktionary, CC BY-SA 4.0.