周天 zhōutiān a complete circle Definitions Defs Origin Strokes Stroke Words Sentences Sents zhōutiān a complete circle 周 zhōu nounlocative all around (bound form) circumference; periphery; circle; cycle天 tiān noun sky sky; heavens; the space above the earthzhōutiān the whole universe 周 zhōu adjectiveadverb entire (bound form) whole; entire; all over; universal天 tiān noun sky sky; heavens; the space above the earthzhōutiān Sunday 周 zhōu noun week week; used primarily in writing or formal contexts; usually does not take a measure word天 tiān noun day a period of twenty-four hours; also used as a measurement for days or a specific time of day