Cycloidians is spelled with the phonetic transcription /saɪkˈlɔɪ.di.ənz/, with the stress falling on the second syllable. This word refers to people who study or are fascinated by cycloids, which are curves formed by tracing a point on a circle as it rolls along a straight line. The spelling of Cycloidians follows the typical English pattern of adding the suffix "-ian" to a base word to indicate membership or affiliation with a particular group or subject of study.