vapour
n . 水汽,水蒸气
vi . 蒸发,自夸
vt . 使蒸发,使汽化
水汽,水蒸气蒸发,自夸使蒸发,使汽化
vapour n 1 :
a visible suspension in the air of particles of some substance [
synonym : {
vapor }, {
vapour }]
2 :
the process of becoming a vapor [
synonym : {
vaporization },
{
vaporisation }, {
vapor }, {
vapour }, {
evaporation }]
Vapor \
Va "
por \,
n . [
OE .
vapour ,
OF .
vapour ,
vapor ,
vapeur ,
F .
vapeur ,
L .
vapor ;
probably for cvapor ,
and akin to Gr . ?
smoke , ?
to breathe forth ,
Lith .
kvepti to breathe ,
smell ,
Russ .
kopote fine soot .
Cf . {
Vapid }.] [
Written also {
vapour }.]
[
1913 Webster ]
1 . (
Physics )
Any substance in the gaseous ,
or aeriform ,
state ,
the condition of which is ordinarily that of a liquid or solid .
[
1913 Webster ]
Note :
The term vapor is sometimes used in a more extended sense ,
as identical with gas ;
and the difference between the two is not so much one of kind as of degree ,
the latter being applied to all permanently elastic fluids except atmospheric air ,
the former to those elastic fluids which lose that condition at ordinary temperatures .
The atmosphere contains more or less vapor of water ,
a portion of which ,
on a reduction of temperature ,
becomes condensed into liquid water in the form of rain or dew .
The vapor of water produced by boiling ,
especially in its economic relations ,
is called steam .
[
1913 Webster ]
Vapor is any substance in the gaseous condition at the maximum of density consistent with that condition .
This is the strict and proper meaning of the word vapor . --
Nichol .
[
1913 Webster ]
2 .
In a loose and popular sense ,
any visible diffused substance floating in the atmosphere and impairing its transparency ,
as smoke ,
fog ,
etc .
[
1913 Webster ]
The vapour which that fro the earth glood [
glided ].
--
Chaucer .
[
1913 Webster ]
Fire and hail ;
snow and vapors ;
stormy wind fulfilling his word . --
Ps .
cxlviii .
8 .
[
1913 Webster ]
3 .
Wind ;
flatulence . [
Obs .] --
Bacon .
[
1913 Webster ]
4 .
Something unsubstantial ,
fleeting ,
or transitory ;
unreal fancy ;
vain imagination ;
idle talk ;
boasting .
[
1913 Webster ]
For what is your life ?
It is even a vapor ,
that appeareth for a little time ,
and then vanisheth away . --
James iv .
14 .
[
1913 Webster ]
5 .
pl .
An old name for hypochondria ,
or melancholy ;
the blues . "
A fit of vapors ." --
Pope .
[
1913 Webster ]
6 . (
Pharm .)
A medicinal agent designed for administration in the form of inhaled vapor . --
Brit .
Pharm .
[
1913 Webster ]
{
Vapor bath }.
(
a )
A bath in vapor ;
the application of vapor to the body ,
or part of it ,
in a close place ;
also ,
the place itself .
(
b ) (
Chem .)
A small metallic drying oven ,
usually of copper ,
for drying and heating filter papers ,
precipitates ,
etc .; --
called also {
air bath }.
A modified form is provided with a jacket in the outside partition for holding water ,
or other volatile liquid ,
by which the temperature may be limited exactly to the required degree .
{
Vapor burner },
a burner for burning a vaporized hydrocarbon .
{
Vapor density } (
Chem .),
the relative weight of gases and vapors as compared with some specific standard ,
usually hydrogen ,
but sometimes air .
The vapor density of gases and vaporizable substances as compared with hydrogen ,
when multiplied by two ,
or when compared with air and multiplied by 28 .
8 ,
gives the molecular weight .
{
Vapor engine },
an engine worked by the expansive force of a vapor ,
esp .
a vapor other than steam .
[
1913 Webster ]
Vapor \
Va "
por \,
v .
i . [
imp . &
p .
p . {
Vapored };
p .
pr . &
vb .
n .
{
Vaporing }.] [
From {
Vapor },
n .:
cf .
L .
vaporare .] [
Written also {
vapour }.]
[
1913 Webster ]
1 .
To pass off in fumes ,
or as a moist ,
floating substance ,
whether visible or invisible ,
to steam ;
to be exhaled ;
to evaporate .
[
1913 Webster ]
2 .
To emit vapor or fumes . [
R .]
[
1913 Webster ]
Running waters vapor not so much as standing waters .
--
Bacon .
[
1913 Webster ]
3 .
To talk idly ;
to boast or vaunt ;
to brag .
[
1913 Webster ]
Poets used to vapor much after this manner .
--
Milton .
[
1913 Webster ]
We vapor and say ,
By this time Matthews has beaten them . --
Walpole .
[
1913 Webster ]
Vapor \
Va "
por \,
v .
t .
To send off in vapor ,
or as if in vapor ;
as ,
to vapor away a heated fluid . [
Written also {
vapour }.]
[
1913 Webster ]
He '
d laugh to see one throw his heart away ,
Another ,
sighing ,
vapor forth his soul . --
B .
Jonson .
[
1913 Webster ]
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