Definition of Placebo
Pla`ce´bo
n.
1.
(R. C. Ch.)
The
first
antiphon
of
the
vespers
for
the
dead
.
2.
(Med.)
A
prescription
with
no
pharmacological
activity
given
to
a
patient
to
humor
or
satisfy
the
desire
for
medical
treatment
.
3.
(Med.)
a
dose
of
a
compound
having
no
pharmacological
activity
given
to
a
subject
in
a
medical
experiment
as
part
of
a
control
experiment
in
a
test
of
the
effectiveness
of
another
,
active
pharmacological
agent
.
To sing placebo
to
agree
with
one
in
his
opinion
;
to
be
complaisant
to
.
- Chaucer.
Related Words
active
placebo
,
medicament
,
medication
,
medicinal
drug
,
medicine
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