瞬息 shùnxī in a flash Origin Definitions Defs Strokes Stroke Words Sentences Sents 瞬息万变 shùnxīwànbiàn fast-changing undergoing many changes in an extremely short period of time; rapid substantial change瞬息之间 shùnxīzhījiān in a flash (idiom) in the wink of an eye; in the time it takes to breathe or blink, meaning a very short period of time