Ovum—An egg.
Oxalic Acid—An acid found in sorrel, very poisonous.
Palate—The roof of the mouth.
Palliative—To afford relief only.
Palpitation—Unnatural beating of the heart.
Paralysis—Loss of motion.
Parturition—Childbirth.
Pathological—Morbid, diseased.
Pelvis—The bony cavity at lower part of trunk.
Pericardium—Sac containing the heart.