algia. Pain, as in neuralgia, nerve pain.
alkaloidal. An organic base of vegetable origin causing toxicologic effects.
alveolar. Pertaining to the alveoli.
ambi. Both, as in ambidexterity, the ability to use both hands with equal ease.
ambulatory. Walking, able to walk.
ameba. A small one-celled animal that constantly changes its shape by sending out processes of its protoplasm.
amyl nitrite. A drug used to dilate the blood vessels.
anal. Relating to the anus.
anemia. A condition in which the blood is reduced in amount or is deficient in red blood cells or in hemoglobin.
anerobic. Living without air.