An alternative or archaic form meaning the same as cyclonic; relating to cyclones or cyclone-like motion.
Variant of cyclonic with an added -al suffix, creating a redundant but historically used adjective form. Some early meteorological texts preferred this longer form, but it gradually fell out of favor.
Language often creates multiple versions of adjectives before settling on one—'cyclonical' lost out to 'cyclonic' because shorter is usually better, which is why we don't say 'dramatical' anymore.
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