pyemia
Septicemia (blood poisoning) caused by pyogenic (producing pus)
microorganisms in the blood, often resulting in the formation of
multiple abscesses.

pyrogallic Acid
White, toxic crystalline phenol, C6H3(OH)3, used as a photographic
developer and to treat certain skin diseases.

quassia
Tropical American shrub (Quassia amara) with bright scarlet flowers. A
bitter substance from its wood is used in medicine and as an
insecticide.

Queen of the meadow (Meadowsweet)
European herbaceous plant (Spiraea Ulmaria). North American shrubs
(Spiraea alba or S. latifolia) having umbel-shaped clusters of white
flowers. Perennial herbs of the genus Filipendula in the rose family.

quinine
Bitter, colorless, powder or crystalline alkaloid, C20H24N2O2-3H2O,
derived from cinchona barks and used to treat malaria.

quince
Western Asian shrub or tree (Cydonia oblonga) with white flowers and
hard apple-like fruit.

quinsy
Acute inflammation of the tonsils and surrounding tissue, often leading
to an abscess.