The Earth is an example of a planet.
Origin of planet
- Middle English from Old French planete from Late Latin planēta from Greek planētēs variant of planēs planēt- from planāsthai to wander pelə-2 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English planete, from Old English planÄ“ta (“planet, chasuble"), from Latin planeta, planetes, from Ancient Greek Ï€Î»Î±Î½Î®Ï„Î·Ï‚ (planÄ“tÄ“s) variant of Ï€Î»Î¬Î½Î·Ï‚ (planÄ“s, “wanderer, planet"), from Ancient Greek Ï€Î»Î±Î½Î¬Ï‰ (planÃ¡Å, “wander about, stray"), of unknown origin. Perhaps from a Proto-Indo-European *pel- (“to wander, roam"), cognate with Latin pÄlor (“wander about, stray"), Old Norse flana (“to rush about"), Norwegian flanta (“to wander about"). More at flaunt.