foramen ovale

noun 0.784

infraorbital foramen

noun 0.724

foraminotomy

noun 0.688

foraminifer

noun 0.662

sphenopalatine foramen

noun 0.661

foram

noun 0.656

stylomastoid foramen

noun 0.647

foraminiferan

noun 0.638

orifice

noun 0.598

pore

noun 0.584

fontanelle

noun 0.579

aperture

noun 0.569

meatus

noun 0.569

formin

noun 0.566

neural canal

noun 0.566

piriform aperture

noun 0.555

perforation

noun 0.554

anteroom

noun 0.552

stoma

noun 0.545

fenestra

noun 0.542

cavity

noun 0.539

cavern

noun 0.537

internal auditory canal

noun 0.537

formant

noun 0.535

fistula

noun 0.534

forum

noun 0.534

doorway

noun 0.533

fossa

noun 0.533

hole

noun 0.531

tunnel

noun 0.530

air hole

noun 0.528

spinal canal

noun 0.527

root canal

noun 0.525

lacune

noun 0.525

sinus

noun 0.521

passageway

noun 0.520

ostium

noun 0.519

doorframe

noun 0.518

door

noun 0.518

antrum

noun 0.517

conduit

noun 0.516

knothole

noun 0.515

fissure

noun 0.515

formation

noun 0.513

hollow

noun 0.513

earhole

noun 0.511

mortise

noun 0.511

portal

noun 0.511

canaliculus

noun 0.511

porthole

noun 0.509

forge

noun 0.509

osculum

noun 0.509

lacuna

noun 0.509

fore

noun 0.508

canal

noun 0.507

fenestral

noun 0.507

opusculum

noun 0.506

chamber

noun 0.502

porosity

noun 0.502

what for

noun 0.502

aditus

noun 0.501

sound hole

noun 0.501

cave

noun 0.501