Webster's New World Medical Dictionary

trench mouth
See 
acute membranous 
gingivitis.
Treponema pallidum
The cause of syphilis, a
worm-like, spiral-shaped bacterium called a spiro-
chete that wiggles vigorously when viewed under a
microscope.
triage
The process of sorting people based on
their need for immediate medical treatment as com-
pared to their chance of benefiting from such care.
Triage is done in emergency rooms, disasters, and
wars, when limited medical resources must be allo-
cated to maximize the number of survivors. Triage
in this sense originated in World War I. Wounded
soldiers were classified into one of three groups:
those who could be expected to live without medical
care, those who would likely die even with care, and
those who could survive if they received care.
TRICARE
See 
CHAMPUS.
triceps
The muscle that extends (straightens) the
forearm. The triceps can be felt as the tense muscle
in the back of the upper arm while one is doing
push-ups. The triceps has three heads, or origins.
Its full name is the triceps brachii.
Trichinella spiralis
The worm that causes
trichinosis. Trichinella spiralis larvae can infest pigs
and wild game. It hibernates in muscle tissue within
a protective cyst. When a human or an animal eats
meat that contains infective Trichinella cysts, the
acid in the stomach dissolves the hard covering of
the cyst and releases the worms. The worms pass
into the small intestine and become mature within 1
or 2 days. After the adult worms mate, the females
lay eggs. Eggs develop into immature worms, travel
through the arteries, and are transported to mus-
cles. Within the muscles, each worm curls into a
ball and encysts (becomes enclosed in a capsule).
Infection occurs when these encysted worms are
consumed in meat, continuing the cycle. Also
known as pork tapeworm. See also 
trichinosis.