Etymology

periplanar

P3E1R1I1P3L1A1N1A1R1

Today it means: Describing a torsion angle between 0° and 30°, or between 150° and 180° Full definition →

English planar ← Ancient Greek περῐ́ (perĭ́) ← Proto-Indo-European *per-
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Indo-European*per-
  2. Ancient Greekπερῐ́ (perĭ́)
  3. Englishperi-
  4. Englishplanar
  5. English todayperiplanar

From peri- + planar.

Etymology from Wiktionary, CC BY-SA 4.0.