also: まんかん
noun
ebb and flow; tidal rise and fall
Refers to the natural cycle of the tide rising and falling. Often used in poetic or descriptive contexts.
満ち干は月の引力によって起こる。
The ebb and flow of the tide is caused by the moon's gravity.
海岸で満ち干を眺めるのが好きだ。
I like watching the tide rise and fall at the seashore.