Definition of Thyroid
Thy´roid
a.
1.
Shaped
like
an
oblong
shield
;
shield-shaped
;
as
,
the
thyroid
cartilage
.
2.
(Anat.)
Of
or
pertaining
to
the
thyroid
body
,
thyroid
cartilage
,
or
thyroid
artery
;
thyroideal
.
Thyroid cartilage
See
under
Larynx
.
Thyroid body
(Anat.)
an
endocrine
gland
having
two
lobes
,
located
in
the
floor
of
the
mouth
or
the
region
of
the
larynx
,
which
secretes
two
hormones
(
thyroxine
and
triiodothyronine
)
that
regulate
the
rates
of
growth
and
metabloism
.
In
man
and
most
mammals
it
is
a
highly
vascular
organ
,
partly
surrounding
the
base
of
the
larynx
and
the
upper
part
of
the
trachea
.
Cases
of
hypothyroidism
,
where
the
gland
is
insufficiently
active
,
can
be
treated
by
administration
of
thyroxine
or
a
combination
of
thyroxine
and
triiodothyronine
.
Thyroid dislocation
(Surg.)
dislocation
of
the
thigh
bone
into
the
thyroid
foramen
.
Thyroid foramen
the
obturator
foramen
.
Related Words
thyroid
gland
,
thyroidal
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