Synonyms for Rotary (same or very similar meaning)
WordNet sense 1 (a road junction at which traffic streams circularly around a central island):
circle, roundabout, traffic circle
WordNet sense 2 (electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa):
synchronous converter, rotary converter
WordNet sense 3 (marked by or moving in a circle):
circular
WordNet sense 4 (recurring in cycles):
cyclic, cyclical
From the ODE community, based on WordNet
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