半月弁半月(肺動脈弁の)Lunules of semilunar cusps of pulmonary valve(Lunulae valvularum semilunarium (Valvae trunici pulmonalis))
半月弁半月(肺動脈弁の)【はんげつべんはんげつ(はいどうみゃくの)】 Crescent-shaped areas on both sides of the nodules at the margins of the semilunar cusps.(肺動脈弁の半月弁半月は半月弁結節の両側の弁縁にある薄い半月状の縁。)