vector 音标拼音: [v'ɛktɚ]
n . 向量,矢量,带菌者
vt . 无线电导引
向量,向量,带菌者无线电导引
vector 向量
vector n 1 :
a variable quantity that can be resolved into components 2 :
a straight line segment whose length is magnitude and whose orientation in space is direction 3 :
any agent (
person or animal or microorganism )
that carries and transmits a disease ; "
mosquitos are vectors of malaria and yellow fever "; "
fleas are vectors of the plague "; "
aphids are transmitters of plant diseases "; "
when medical scientists talk about vectors they are usually talking about insects "
[
synonym : {
vector }, {
transmitter }]
4 : (
genetics )
a virus or other agent that is used to deliver DNA to a cell Vector \
Vec "
tor \,
n . [
L .,
a bearer ,
carrier .
fr .
vehere ,
vectum ,
to carry .]
1 .
Same as {
Radius vector }.
[
1913 Webster ]
2 . (
Math .)
A directed quantity ,
as a straight line ,
a force ,
or a velocity .
Vectors are said to be equal when their directions are the same and their magnitudes equal .
Cf .
{
Scalar }.
[
1913 Webster ]
Note :
In a triangle ,
either side is the vector sum of the other two sides taken in proper order ;
the process finding the vector sum of two or more vectors is vector addition (
see under {
Addition }).
[
1913 Webster ]
66 Moby Thesaurus words for "
vector ":
aerial infection ,
air line ,
airborne infection ,
axis ,
azimuth ,
beeline ,
biological vector ,
carrier ,
chord ,
communicability ,
compass bearing ,
compass direction ,
contagion ,
contagiousness ,
contamination ,
course ,
cryptogenic infection ,
diagonal ,
diameter ,
direct infection ,
direct line ,
directrix ,
droplet infection ,
dust infection ,
edge ,
epidemiology ,
great -
circle course ,
hand infection ,
heading ,
indirect infection ,
infection ,
infectiousness ,
lee side ,
magnetic bearing ,
mechanical vector ,
normal ,
perpendicular ,
phytogenic infection ,
primary infection ,
pyogenic infection ,
radius ,
radius vector ,
relative bearing ,
right line ,
secant ,
secondary infection ,
segment ,
shortcut ,
side ,
straight ,
straight course ,
straight line ,
straight stretch ,
straightaway ,
streamline ,
subclinical infection ,
tack ,
taint ,
tangent ,
transversal ,
true bearing ,
vehicle ,
virus ,
waterborne infection ,
weather side ,
zoogenic infection
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