Category: P

A term applied to the lens of some eyeglasses that lighten or darken in response to the amount or intensity of ultraviolet light that is present, photogrey.  

The chemically uniting of gaseous products in the atmosphere into irritating compounds with the sun’s action as a chemical catalyst photochemical.  

Refers to the effect that radiant energy has in producing chemical changes, photochemical smog.  

An immune reaction caused by light rays changing medications in the blood to allergic substances. A contact dermatitis produced by the interaction between ultraviolet light rays and topically applied chemicals such as sunscreens, perfumes, phenothiazines, sulfonamides, and some components in soaps. Sunlight changes the structure of these chemicals, causing them to become allergens. An eczematous…

A creatine-phosphoric acid compound that occurs in muscle is the energy source in muscle contraction, creatinine. Phosphate form of the muscle protein creatine, which is used as an energy source for muscle flexion. A compound found in muscle. It is important as an energy source, yielding phosphate and creatine in this process, and releasing energy…

A phospholipid that is widely distributed in the body, in the brain and spinal cord.  

Lecithin.  

Tightness of the penile foreskin so that it cannot be drawn back from over the glans. A condition in which the foreskin is tight and has to be removed by circumcision. A condition in which a too-tight foreskin cannot be fully drawn back over the head, or glans, of the penis, and so impedes free…

The beliefs, concepts, attitudes, perceptions, and theory of individual health educators and the profession in general. It sets the boundaries of practice, clarifying the areas of professional concentration. It ties together theory and practice.  

An application of philosophical principles to educational programs and practices.