Al' i men' ta ry. Pertaining to food.

Al' ka line (-lin) substances neutralize acids.

An' æs thet' ic. A substance that destroys the feeling of pain.

A or' ta. The largest artery of the body.

Ap' o plex y (pleks y). A disease marked by loss of sensation and voluntary motion.

A' que ous (a'-kwe-us). Watery.

A rach' noid (arachne, a spider; eidos, form). A membrane like a spider's web covering the brain.

Ar' bor vi'tæ means "the tree of life."

Ar' tery (aer, air; tereo, I contain). So named because after death the arteries contain air only, and hence the ancients supposed them to be air tubes leading through the body.

Ar tic' u late (articulo, I form a joint).