おきに

expression, suffix

every ...; at intervals of ...; with ... in between

Attaches to a noun expressing a distance, time period, or number of objects to mean 'every ...' or 'at intervals of ...'. The interval includes the unit itself, so 1日おきに means 'every other day' (with one day in between).

• この薬くすりは8時じ間かんおきに飲のんでください。

  Please take this medicine every 8 hours.

• 駅えきまでバスが10分ぷんおきに出でている。

  Buses leave for the station every 10 minutes.

• 1メートルおきに木きを植うえた。

  We planted trees at intervals of one meter.