prosobranch

/P R AA1 S AH0 B R AE1 N CH/
noun
  1. 1

    (zoology) A gastropod with gills in front of the heart, formerly thought to belong to a single group, Prosobranchia.

adjective
  1. 1

    (of a gastropod) Having gills placed in front of the heart.

  2. 2

    (of gills) Placed in front of the heart.