virtual 音标拼音: [v'ɚtʃuəl]
n . 虚拟
a . 虚的,实质的,有效的,事实上的
虚拟虚的,实质的,有效的,事实上的
virtual 虚拟
virtual adj 1 :
being actually such in almost every respect ; "
a practical failure "; "
the once elegant temple lay in virtual ruin "
[
synonym : {
virtual (
a )}, {
practical (
a )}]
2 :
existing in essence or effect though not in actual fact ; "
a virtual dependence on charity "; "
a virtual revolution ";
"
virtual reality "
Virtual \
Vir "
tu *
al \ (?;
135 ),
a . [
Cf .
F .
virtuel .
See {
Virtue }.]
1 .
Having the power of acting or of invisible efficacy without the agency of the material or sensible part ;
potential ;
energizing .
[
1913 Webster ]
Heat and cold have a virtual transition ,
without communication of substance . --
Bacon .
[
1913 Webster ]
Every kind that lives ,
Fomented by his virtual power ,
and warmed . --
Milton .
[
1913 Webster ]
2 .
Being in essence or effect ,
not in fact ;
as ,
the virtual presence of a man in his agent or substitute .
[
1913 Webster ]
A thing has a virtual existence when it has all the conditions necessary to its actual existence .
--
Fleming .
[
1913 Webster ]
To mask by slight differences in the manners a virtual identity in the substance . --
De Quincey .
[
1913 Webster ]
{
Principle of virtual velocities } (
Mech .),
the law that when several forces are in equilibrium ,
the algebraic sum of their virtual moments is equal to zero .
{
Virtual focus } (
Opt .),
the point from which rays ,
having been rendered divergent by reflection of refraction ,
appear to issue ;
the point at which converging rays would meet if not reflected or refracted before they reach it .
{
Virtual image }. (
Optics )
See under {
Image }.
{
Virtual moment } (
of a force ) (
Mech .),
the product of the intensity of the force multiplied by the virtual velocity of its point of application ; --
sometimes called {
virtual work }.
{
Virtual velocity } (
Mech .),
a minute hypothetical displacement ,
assumed in analysis to facilitate the investigation of statical problems .
With respect to any given force of a number of forces holding a material system in equilibrium ,
it is the projection ,
upon the direction of the force ,
of a line joining its point of application with a new position of that point indefinitely near to the first ,
to which the point is conceived to have been moved ,
without disturbing the equilibrium of the system ,
or the connections of its parts with each other .
Strictly speaking ,
it is not a velocity but a length .
{
Virtual work }. (
Mech .)
See {
Virtual moment },
above .
[
1913 Webster ]
31 Moby Thesaurus words for "
virtual ":
accepted ,
basic ,
between the lines ,
constructive ,
covert ,
cryptic ,
delitescent ,
dormant ,
effective ,
esoteric ,
essential ,
fundamental ,
hibernating ,
hidden ,
latent ,
lurking ,
muffled ,
mystic ,
obfuscated ,
obscured ,
occult ,
possible ,
potential ,
practical ,
sleeping ,
submerged ,
under the surface ,
underlying ,
understood ,
unmanifested ,
veiled
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VIRTUAL Definition Meaning - Merriam-Webster How to use virtual in a sentence being such in essence or effect though not formally recognized or admitted; being on or simulated on a computer or computer network : such as… See the full definition Games; Word of the Day; Grammar; Wordplay; Slang; Rhymes; Word Finder; Thesaurus; Join MWU; More Games; Word of the Day;
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