Naturopath – a person who practices naturopathy, a drugless system of therapy based on the use of physical forces such as heat, water, light, air and massage.

Necrosis – death of cells or tissues.

Node – literally a knot, a node is a collection of tissue.

Nodule – a small collection of tissue.

nodule

Non-surgical – not of, relating to, involving, or used in surgery.

Nurse – a person skilled in nursing.

Nutrition – the science of taking in and utilizing foods.