== Vietnamese ==
=== Etymology ===
Sino-Vietnamese word from 循環.
=== Pronunciation ===
(Hà Nội) IPA(key): [twən˨˩ hwaːn˨˩]
(Huế) IPA(key): [twəŋ˦˩ hwaːŋ˦˩]
(Hồ Chí Minh City) IPA(key): [t⁽ʷ⁾əŋ˨˩ waːŋ˨˩]
=== Adjective ===
moving about and back again; revolving, cycling, circling, circulatory, etc.
(mathematics, of an infinite decimal number) with a repeating decimal