pygidium /pī-gidˈi-əm or pī-jidˈi-əm/ (zoology)

1. In insects, the tergum of the last abdominal somite
2. The tail-shield of a trilobite

• irrecognizable
• irreconcilability
• irreconcilable
• irreconcilableness
• irreconcilables
• irreconcilably
• irreconciled
• irreconcilement
• irrecoverable
• irrecoverableness
• irrecoverably
• irrecusable
• irrecusably
• irredeemabilities
• irredeemability
• irredeemable
• irredeemableness
• irredeemables
• irredeemably
• Irredentism
• Irredentist
• irreducibilities
• irreducibility
• irreducible
• irreducibleness