A combining form or prefix meaning circle, ring, or recurring pattern, used in scientific and technical terminology.
From Greek 'kyklos' meaning circle or wheel. This root appears in many scientific words to indicate circular structures or cyclic processes. The form entered English through Latin and scientific nomenclature during the Renaissance.
This tiny prefix has powered hundreds of scientific discoveries—from bicycles to cyclones to the cyclical nature of the water cycle. Scientists keep using it because the Greeks were brilliant at naming things based on what they actually look like!
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