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Classic usage
Pronunciation: /tɔɹˈneɪ.doʊ/
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From earlier English ternado, attested since the 1550s as a nautical term for a windy thunderstorm. From Spanish tronada (“thunderstorm”), from tronar (“to thunder”), from Latin tonō (“to thunder”), from Proto-Indo-European *(s)tenh₂- (“to thunder”). The o and r were reversed in English (metathesis) under influence of Spanish tornar (“to twist, to turn”), from Latin tornō (“to turn”).
twister
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Classic usage
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