Webster's New World Medical Dictionary

lymphadenopathy-associated virus
See 
HIV.
lymphangiogram
An X-ray of the lymphatic sys-
tem for which a dye is injected to outline the lym-
phatic vessels and organs.
lymphangioma
An abnormal structure that con-
sists of a collection of blood vessels and lymph ves-
sels that are overgrown and clumped together.
Depending on its nature, a lymphangioma may grow
slowly or quickly. Lymphangiomas can cause prob-
lems because of their location. For example, a lym-
phangioma around the larynx might cause a
breathing problem.
lymphatic
Pertaining to a small, thin channel that
is similar to a blood vessel and that collects and car-
ries tissue fluid (lymph) from the body. This fluid
ultimately drains back into the bloodstream.
lymphatic system
The tissues and organs,
including the bone marrow, spleen, thymus, and
lymph nodes, that produce and store cells that fight
infection and disease. The channels that carry
lymph are also part of this system.
lymphedema
A condition in which excess fluid
collects in tissue and causes swelling. Lymphedema
may occur in the arm or leg after lymph vessels or
lymph nodes in the underarm or groin are removed.
It usually causes painless swelling. 
lymphocyte
A small white blood cell that plays a
large role in defending the body against disease.
Lymphocytes are integrally involved in many
immune responses. There are two main types of
lymphocytes: B cells and T cells. Lymphocytes are
often present at sites of chronic inflammation.
lymphocytic
Referring to lymphocytes, a type of
white blood cell. For example, lymphocytic inflam-
mation in the skin is skin that is infiltrated with
lymphocytes.
lymphocytopenia
Having an abnormally low
number of lymphocytes. There are many causes of
lymphocytopenia, ranging from medication toxicity to
a variety of diseases.