involucre

noun 0.790

involute

noun 0.606

periostracum

noun 0.573

peridium

noun 0.572

tegument

noun 0.557

integument

noun 0.549

ambulacrum

noun 0.546

volute

noun 0.541

periderm

noun 0.538

envelopment

noun 0.533

indusium

noun 0.528

operculum

noun 0.523

encircling

noun 0.522

annulus

noun 0.521

periosteum

noun 0.520

circumvallation

noun 0.520

involution

noun 0.517

perispore

noun 0.516

corneum

noun 0.515

perianth

noun 0.513

volva

noun 0.513

encasement

noun 0.510

tympanic ring

noun 0.504

cuticle

noun 0.503

encasing

noun 0.502