Etymograph

English

planetic

Planetic comes from Ancient Greek πλανητικός, from πλανάω ‘to wander’, and perhaps ultimately from Proto-Indo-European *pleh₂- ‘flat, broad’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*pleh₂-1‘flat, broad’uncertain
  2. Ancient Greekc. 800–300 BCEπλανάω2‘to wander’
  3. Ancient Greekc. 800–300 BCEπλανητικός2planētikós
  4. Latinc. 75 BCE–200 CEplaneticus2
  5. Englishtodayplanetic2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Ancient Greek πλανάω
  2. 2 Wiktionary, English planetic

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*pleh₂-Wiktionary, Ancient Greek πλανάω‘flat, broad’uncertain
  2. Ancient Greekc. 800–300 BCEπλανάωWiktionary, English planetic‘to wander’
  3. Ancient Greekc. 800–300 BCEπλανητικόςWiktionary, English planeticplanētikós
  4. Latinc. 75 BCE–200 CEplaneticusWiktionary, English planetic
  5. EnglishtodayplaneticWiktionary, English planetic

Linked words

through Proto-Indo-European *pleh₂- ‘flat, broad’

field, floor, explain, palm, plain, explanation, clan, archipelago, fluke, parma, explanatory, flounder, placenta, playa, lech, planar, polonium, placate, implacable, esplanade, veld, palatine, flay, pelagic, floe, plantar, purdah, llano, planta, 49 more

through Ancient Greek πλανάω ‘to wander’

aeroplane, 6 more

Today it means

adj Of or relating to planets; planetary.

Sources

Sources: Wiktionary, “planetic”; the older steps come from the Wiktionary entry for Ancient Greek πλανάω. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *pleh₂- / planetic