Assertion: crab's abdomen | /r/HasProperty | pleon
Facets:
Source sentences:
text: In most male crabs, the form of the abdomen (pleon) is narrow and triangular, while the females have a broader, rounder abdomen.
text: The isopod body plan consists of a head (cephalon), a thorax (pereon) with eight segments (pereonites), and an abdomen (pleon) with six segments (pleonites), some of which may be fused.