Node (nod). A knob. Protuberance.
Normal (nor'-mal). Conforming to natural law or order.
Nostalgia (nos-tal'-je-ah). Homesickness.
Nostrum (nos'trum). A quack; secret medicine.
Nutritious (nu'trish'us). Nourishing.
Obtuse (ob-tus'). Dull.
Obesity (obes'it-e). An excessive development of fat.
Oedema (e-de'mah). An infiltration of serum in a part; watery swelling.
Obstetrics (ob-stet'-riks). Care of women during pregnancy, confinement
and after.
Occipital (ok-sip'it-al). Pertaining to the back part of the head
(occiput).