stye (hordeolum) Inflamed swelling of a sebaceous gland at the margin of an eyelid. suety Consisting of, or resembling, suet (hard fatty tissues around the kidneys of cattle and sheep, used in cooking and for making tallow.) sugar of lead lead acetate, a poisonous white crystalline compound, Pb(C2H3O2)2.3H2O, used in hair dyes, waterproofing compounds, and varnishes. sumbul Root of a plant of the genus Ferula (F. sumbul); formerly a tonic and antispasmodic. Summer complaint (summer diarrhea) Diarrhea of children that in hot weather; often caused by ingestion of food contaminated by microorganisms. Sulphonal Produced by combining mercaptan and acetone; employed as a hypnotic. sulphuric ether Ethyl ether; formerly called Naphtha vitrioli (naphtha of vitriol). sumac (sumach) Shrubs or small trees of the genus Rhus, having compound leaves, clusters of small greenish flowers, and usually red, hairy fruit. Some species, such as the poison ivy and poison oak, cause an acute itching rash on contact. suppuration Formation or discharge of pus. Also called pyesis, pyopoiesis, pyosis. suprarenal Located above the kidney; a suprarenal part, especially an adrenal gland. sweet william Annual, biennial, or perennial herb (Dianthus barbatus), native to Eurasia, widely cultivated as an ornamental for its flat-topped dense clusters of varicolored flowers. synechia Adhesions between the iris and the lens or cornea caused by trauma or eye surgery or as a complication of glaucoma or cataracts; may cause blindness terebenthene Oil of turpentine. terebinth Mediterranean tree (Pistacia terebinthus), a source of tanning material and turpentine. tetter Skin diseases (eczema, psoriasis, herpes) that cause eruptions and itching. thrall Slave or serf, who is held in bondage. One intellectually or morally enslaved. thrush A contagious childhood disease caused by a fungus, Candida albicans. Causes small whitish eruptions on the mouth, throat, and tongue, and usually accompanied by fever, colic, and diarrhea. thuja (arborvitae) A North American or east Asian evergreen tree or shrub of the genus Thuja, having flattened branchlets with opposite, scale-like leaves and small cones; used as ornamentals and timber. A similar plant of the genus Platycladus or Thujopsis. thymol White, crystalline, aromatic compound, C10H14O, derived from thyme oil and other oils or made synthetically and used as an antiseptic, a fungicide, and a preservative. tolu (balsam of tolu, tolu balsam) Aromatic yellowish brown balsam from the tolu balsam tree used in cough syrups. tormentil (Potentilla erecta) Plant of northern Europe found in clearings and meadows. The root has been used to stop bleeding, for food in times of need and to dye leather red. torpid Lacking the power of motion or feeling.