Dictionary

radiograph In medicine, an X-ray or a film produced through X-ray.

radiography The process of obtaining film records (radiographs) of internal structures of the body. Radiography is made possible by X-rays passing through the body to act on a specially sensitized film.

quasi- Prefix meaning seemingly, as in quasidominant (seemingly dominant).

Queensland tick typhus See typhus, Queensland tick.

quickening The moment during pregnancy when the baby is first felt to move.

quiescent Inactive, resting. For example, tuberculosis can be a quiescent (inactive) infection.

quinacrine 1 A drug that has been used to treat malaria as well as giardiasis. 2 In cytogenetics, a fluorescent dye used to stain chromosomes. See also malaria; plasmodium.

quinidine A medication (brand name: Cardioquin, Quinaglute, Quinalan, Quinidex, Quinora) that is prescribed to treat abnormal heart rhythms. Quinidine is derived from the same botanical source as quinine. Quinidine interacts with a number of other medications, particularly over-thecounter cold and cough remedies. See also quinine.

quinine An antimalarial agent. Quinine takes its name from the Peruvian Indian word for “bark of the tree,” referring to the cinchona tree from which quinine was obtained. Until World War I, quinine was the only effective treatment for malaria. In fact, quinine was the first chemical compound to be successfully used to treat an…

quinsy See peritonsillar abscess.

Quintan fever See trench fever.

quotid See q.d.