Dictionary

titer The concentration of a substance in a fluid, such as the concentration of an antibody in blood. The titer reflects the amount of the substance in the fluid. Sometimes also spelled titre.

titre See titer.

TMA Trimethylaminuria. See fish-odor syndrome.

TMJ Temporomandibular joint.

TMJ syndrome Temporomandibular joint syndrome.

tobacco A South American herb (Nicotiana tabacum) whose leaves contain 2 to 8 percent nicotine and serve as the source of both smoking and smokeless tobacco and the basis of great health hazards.

toc-, toco- Prefix meaning childbirth, as in tocolysis (the slowing or halting of labor). Sometimes spelled tok- and toko-.

tocolysis The slowing or halting of labor during the birth process.

thyroid binding globulin A blood protein that binds with the thyroid hormone thyroxine (T4).

thyroid gland See gland, thyroid.

thyroid hormone A chemical substance that is made by the thyroid gland and is essential for the function of every cell in the body. The thyroid gland uses iodine to make thyroid hormones, which help regulate growth and the rate of chemical reactions (metabolism) and are involved in the circadian rhythms that govern sleep, among…

thyroid hormone organification defect IIb See Pendred syndrome.