gunpowder 音标拼音: [g'ʌnp
, ɑʊdɚ]
n . 火药;中国珠茶
火药;中国珠茶
gunpowder n 1 :
a mixture of potassium nitrate ,
charcoal ,
and sulfur in a 75 :
15 :
10 ratio which is used in gunnery ,
time fuses ,
and fireworks [
synonym : {
gunpowder }, {
powder }]
Gunpowder \
Gun "
pow `
der \ (
g [
u ^]
n "
pou `
d [~
e ]
r ),
n . (
Chem .)
A black ,
granular ,
explosive substance ,
consisting of an intimate mechanical mixture of saltpeter ,
charcoal ,
and sulphur .
It is used in gunnery and blasting .
[
1913 Webster ]
Note :
Gunpowder consists of from 70 to 80 per cent of potassium nitraate (
niter ,
saltpeter ),
with 10 to 15 per cent of each of the other ingredients .
Its explosive energy is due to the fact that it contains the necessary amount of oxygen for its own combustion ,
and liberates gases (
chiefly nitrogen and carbon dioxide ),
which occupy a thousand or fifteen hundred times more space than the powder which generated them .
[
1913 Webster ]
{
Gunpowder pile driver },
a pile driver ,
the hammer of which is thrown up by the explosion of gunpowder .
{
Gunpowder plot } (
Eng .
Hist .),
a plot to destroy the King ,
Lords ,
and Commons ,
in revenge for the penal laws against Catholics .
As Guy Fawkes ,
the agent of the conspirators ,
was about to fire the mine ,
which was placed under the House of Lords ,
he was seized ,
Nov .
5 ,
1605 .
Hence ,
Nov .
5 is known in England as {
Guy Fawkes Day }.
{
Gunpowder tea },
a species of fine green tea ,
each leaf of which is rolled into a small ball or pellet .
[
1913 Webster ]
Explosive \
Ex *
plo "
sive \,
n .
1 .
An explosive agent ;
a compound or mixture susceptible of a rapid chemical reaction ,
as {
gunpowder }, {
TNT },
{
dynamite },
or {
nitro -
glycerine }.
[
1913 Webster PJC ]
2 .
A sound produced by an explosive impulse of the breath ;
(
Phonetics )
one of consonants p ,
b ,
t ,
d ,
k ,
g ,
which are sounded with a sort of explosive power of voice .
Note : [
See Guide to Pronunciation , [
root ]
155 -
7 ,
184 .]
[
1913 Webster ]
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