chameleon.
A small to mid-size reptile, of the family Chamaeleonidae, and one of the best known lizard families able to change color and project its long tongue.
Meaning & usage
A small to mid-size reptile, of the family Chamaeleonidae, and one of the best known lizard families able to change color and project its long tongue.
A person with inconstant behavior; one able to quickly adjust to new circumstances.
A hypothetical scalar particle with a non-linear self-interaction, giving it an effective mass that depends on its environment: the presence of other fields.
Where this word comes from
From Middle English camelion, from Old French cameleon, from Latin chamaeleon, from Ancient Greek χαμαιλέων (khamailéōn), from χαμαί (khamaí, “on the earth, on the ground”) + λέων (léōn, “lion”); ultimately a calque from Akkadian 𒌨𒈤𒊭𒆠 (nēšu ša qaqqari, “chameleon, reptile”, literally “lion of the ground", "predator that crawls upon the ground”). The spelling was re-Latinized in the early 18th century. The physics sense was coined by Justin Khoury and Amanda Weltman in 2003 in a paper in Physical Review Letters.
That changes or modifies its color.
The wall was covered with a chameleon paint.
Where this word comes from
From Middle English camelion, from Old French cameleon, from Latin chamaeleon, from Ancient Greek χαμαιλέων (khamailéōn), from χαμαί (khamaí, “on the earth, on the ground”) + λέων (léōn, “lion”); ultimately a calque from Akkadian 𒌨𒈤𒊭𒆠 (nēšu ša qaqqari, “chameleon, reptile”, literally “lion of the ground", "predator that crawls upon the ground”). The spelling was re-Latinized in the early 18th century. The physics sense was coined by Justin Khoury and Amanda Weltman in 2003 in a paper in Physical Review Letters.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.