The phrase "spherical body" refers to an object or shape that is round like a sphere. It means something that is shaped like a ball, with no edges or corners. Full definition
The right image shows red spherical bodies of chloroplasts that are removed and mobilized to the vacuole by chlorophagy. (sciencedaily.com)
Put simply, such an anomaly exists when there is less mass in a particular location than would be expected in the case of a uniform spherical body. (sciencedaily.com)
The missing chunk could be due to a giant impact, smashing away part of KBO's icy mantle, or it could mean Quaoar is actually a «contact binary,» consisting of two more - or-less spherical bodies that touch each other. (sciencemag.org)