Webster's New World Medical Dictionary

multifactorial inheritance
A hereditary pattern
seen when more than one genetic factor is involved
in the causation of a condition. Many common traits
and many common diseases are inherited in a mul-
tifactorial manner.
multi-infarct dementia
Dementia that is
brought on by a series of strokes.
multipara
A woman who has had two or more
pregnancies resulting in potentially viable offspring.
The term para refers to births. A para III has had
three such pregnancies; a para VI or more is also
known as a grand multipara.
multiparous 1
Having two or more offspring at
one birth. 
2
Related to a multipara. See also
uniparous.
multiple chemical sensitivity
A syndrome in
which multiple symptoms reportedly occur with
low-level exposure to many common chemicals.
Abbreviated MCS. MCS is a controversial issue and
has been rejected by numerous medical societies as
an established organic disease. Proposed theories
to explain MCS include allergic reactions, dysfunc-
tion of the immune system, neurobiological sensiti-
zation, and various psychological theories, but there
is insufficient scientific evidence to confirm a rela-
tionship between any of these possible causes and
the occurrence of symptoms.
multiple enchondromatosis
A condition char-
acterized by benign masses of cartilage, called
enchondromas, growing within bones. The enchon-
dromas tend to be in the bones of the hands and feet
and the long bones of the arms and legs. They can
cause pain, deform and shorten a limb, and predis-
pose a person to fractures. Surgery can help to cor-
rect limb-length inequality if it occurs. Also known
as Ollier’s disease.
multiple gestation
A pregnancy in which two or
more fetuses are present in the womb.