peridium

noun 0.653

periderm

noun 0.635

periosteum

noun 0.629

peristomium

noun 0.608

perispore

noun 0.591

involucrum

noun 0.573

nacre

noun 0.562

procuticle

noun 0.560

peritoneum

noun 0.550

perianth

noun 0.542

cuticle

noun 0.541

pellicle

noun 0.539

pericarp

noun 0.537

stratum corneum

noun 0.533

mucoperiosteum

noun 0.531

exosporium

noun 0.528

pereonite

noun 0.525

onionskin

noun 0.522

phragmocone

noun 0.522

epicuticle

noun 0.521

tegument

noun 0.520

prosobranch

noun 0.520

perichondrium

noun 0.518

perimysium

noun 0.518

operculum

noun 0.516

periplasm

noun 0.516

pericardium

noun 0.515

exodermis

noun 0.515

pearl shell

noun 0.512

periostitis

noun 0.512

corneum

noun 0.512

plastron

noun 0.510

endostome

noun 0.507

endosteum

noun 0.507

stratum

noun 0.506

endothecium

noun 0.504

mother-of-pearl

noun 0.504

surface layer

noun 0.504

pleura

noun 0.501

carapace

noun 0.500