Noun
A
barbiturate
C
<
sub
>
11
sub
>
H
<
sub
>
18
sub
>
N
<
sub
>
2
sub
>
O
<
sub
>
2
sub
>
S
(
trademark
'''
Pentothal
''')
used
in
the
form
of
its
sodium
salt
especially
as
an
intravenous
anesthetic
;
and
as
a
supposed
truth serum
.