開かい口こう期き

noun

dilatation stage; first stage of labour

Medical term for the first stage of labour when the cervix dilates.

• 開かい口こう期きは陣じん痛つうが始はじまってから子し宮きゅう口こうが全ぜん開かいするまでの期き間かんです。

  The dilatation stage is the period from the start of contractions until the cervix is fully dilated.