chasma.
A long, narrow, steep-sided depression on a planet (often other than Earth), a moon, or another body in the Solar System.
Meaning & usage
A long, narrow, steep-sided depression on a planet (often other than Earth), a moon, or another body in the Solar System.
An aurora.
Obsolete form of chasm.
Where this word comes from
From Latin chasma, from Ancient Greek χάσμα (khásma, “abyss, cleft”), from Ancient Greek χᾰ́σκω (khắskō, “to gape, yawn”) (possibly from Proto-Indo-European *ǵʰan-, *gʰan- (“to gape, yawn”) + -σκω (-skō, inchoative suffix forming a present-tense word), from Proto-Indo-European *-sḱéti (suffix forming a durative or iterative imperfective verb); or from Proto-Indo-European *ǵʰeh₁y- (“to gape, yawn”)) + Ancient Greek -μᾰ (-mă, suffix forming a noun denoting the result of an action) (from Proto-Indo-European *-mn̥ (suffix forming an action or result noun)). Doublet of chasm. The obsolete “aurora” sense is from the fact that aurorae were thought to be rifts in the sky from which light shone through: see the 1822 quotation.
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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.