Definition of thymus
thy´mus
Pronunciation:
thī´mŭs
a.
1.
(Anat.)
Of
,
pertaining
to
,
or
designating
,
the
thymus
gland
.
Thymus gland
a
ductless
gland
in
the
throat
,
or
in
the
neighboring
region
,
of
nearly
all
vertebrates
.
In
man
and
other
mammals
it
is
the
throat
,
or
neck
,
sweetbread
,
which
lies
in
the
upper
part
of
the
thorax
and
lower
part
of
the
throat
.
It
is
largest
in
fetal
and
early
life
,
and
disappears
or
becomes
rudimentary
in
the
adult
.
The
thymus
gland
functions
as
the
site
of
maturation
of
T-lymphocytes
(
T-cells
),
which
confer
cell-mediated
immunity
on
the
host
organism
;
thus
,
removal
or
malfunciton
of
the
thymus
can
lead
to
absence
of
cell-mediated
immunity
,
and
a
consequent
loss
of
resistance
to
infection
.
Related Words
asterid
dicot
genus
,
family
Labiatae
,
family
Lamiaceae
,
genus
Thymus
,
Labiatae
,
Lamiaceae
,
mint
family
,
thyme
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