腹側の

(1)toward or on or near the belly (front of a primate or lower surface of a lower animal); "the ventral aspect of the human body"; "the liver is somewhat ventral in position"; "ventral (or pelvic) fins correspond to the hind limbs of a quadruped"

(2)腹（霊長類の正面または下等動物の下面）の方へ、腹（霊長類の正面または下等動物の下面）に面した、あるいは、腹（霊長類の正面または下等動物の下面）の近くの

(1)