【医】 ostium primum
former; original
【化】 ortho-
【医】 arch-; arche-; ortho-; pro-; prot-; proto-
【医】 saeptum; septa; septation; septum alveoli
cut; gob; jaws; mouth; opening; ostium; scoop; stoma
【医】 aditus; apertura; aperturae; aperture; bouche; introitus; meatus; mouth
opening; ora; orifice; orificium; oro-; os1; ostia; ostium; portal
stoma; stomata; stomato-; trema