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o 



Occult. Secret, hidden, unknown. 

 Octogenarian. Eighty years old. 

 Ocular. Known by the eye. 

 Oleaginous. Of an oily nature. 

 Organ. Natural instrument. 

 Organism. Organic structure. 

 Os. A bone. 



Os. Naviculare. The navicular bone. 

 Ossification. Conversion into bone. 

 Osseous. Of a bony nature. 



P 



Palliative. Mitigating, not removing. 



Parasitic. Living at another's expense. 



Paralysis. Loss, or diminution of the power of voluntary motion. 



Parieties. The walls, or sides of a cavity. 



Par excellence. By way of eminence. 



Papilla. Minute termination of a nerve. 



Papillce. Plural of papilla. 



Papillated. Having papillae. 



Pathology. A consideration of the nature and effects of diseases. 



Pedal. Belonging to a foot. 



Pectoral. Belonging to the breast. 



Pendulous. Hanging, not supported below. 



Perichondium. A membrane covering a cartilage. 



Periosteum. Membraneous covering of a bone. 



Peripheral. Towards the circumference. 



Perspiratory. Causing, or pertaining to perspiration. 



Phenomenon. In pathology, a morbid condition. 



Phenoetiena. Plural of phenomenon. 



Physiology. The natural constitution of things. 



Pigment. Color. 



Plantar. Belonging to the sole of the foot. 



Plexus. A little net-work of vessels or nerves, or of both. 



Pneumonia. Inflammation of the lungs. 



Post mortem. After death. 



Precursor. Forerunner, harbinger. 



Predisposing. Rendering susceptible to any condition or disease. 



Primary. Original, first. 



Prognosis. Knowledge of a disease. 



Proximate cause. The immediate existing cause of a disease. 



Pulmonary. Belonging to the lungs. 



Pyramidal process. Process resembling a pyramid. 



