Dehiscing or opening by a transverse fissure extending around (a capsule or pod). See Illust. of Pyxidium.

Transversely dehiscent, the top falling away as a lid.

a. (L. circum, around; scindere, to cut) opening splitting by a transverse fissure around the circumference, leaving an upper and lower half; said of certain seed pods or capsules.

opening or cracking along a circle.

Opening along a circular or equatorial line.