inversion 音标拼音: [ɪnv'ɚʒən]
n . 倒转,否定,倒置
倒转,否定,倒置
inversion 反相
inversion 反 逆
inversion n 1 :
the layer of air near the earth is cooler than an overlying layer 2 :
abnormal condition in which an organ is turned inward or inside out (
as when the upper part of the uterus is pulled into the cervical canal after childbirth )
3 :
a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versa 4 : (
genetics )
a kind of mutation in which the order of the genes in a section of a chromosome is reversed 5 :
the reversal of the normal order of words [
synonym : {
anastrophe },
{
inversion }]
6 : (
counterpoint )
a variation of a melody or part in which ascending intervals are replaced by descending intervals and vice versa 7 :
a term formerly used to mean taking on the gender role of the opposite sex [
synonym : {
inversion }, {
sexual inversion }]
8 :
turning upside down ;
setting on end [
synonym : {
inversion },
{
upending }]
9 :
the act of turning inside out [
synonym : {
inversion }, {
eversion },
{
everting }]
Inversion \
In *
ver "
sion \,
n . [
L .
inversio :
cf .
F .
inversion .
See {
Invert }.]
[
1913 Webster ]
1 .
The act of inverting ,
or turning over or backward ,
or the state of being inverted .
[
1913 Webster ]
2 .
A change by inverted order ;
a reversed position or arrangement of things ;
transposition .
[
1913 Webster ]
It is just the inversion of an act of Parliament ;
your lordship first signed it ,
and then it was passed among the Lords and Commons . --
Dryden .
[
1913 Webster ]
3 . (
Mil .)
A movement in tactics by which the order of companies in line is inverted ,
the right being on the left ,
the left on the right ,
and so on .
[
1913 Webster ]
4 . (
Math .)
A change in the order of the terms of a proportion ,
so that the second takes the place of the first ,
and the fourth of the third .
[
1913 Webster ]
5 . (
Geom .)
A peculiar method of transformation ,
in which a figure is replaced by its inverse figure .
Propositions that are true for the original figure thus furnish new propositions that are true in the inverse figure .
See {
Inverse figures },
under {
Inverse }.
[
1913 Webster ]
6 . (
Gram .)
A change of the usual order of words or phrases ;
as , "
of all vices ,
impurity is one of the most detestable ,"
instead of , "
impurity is one of the most detestable of all vices ."
[
1913 Webster ]
7 . (
Rhet .)
A method of reasoning in which the orator shows that arguments advanced by his adversary in opposition to him are really favorable to his cause .
[
1913 Webster ]
8 . (
Mus .)
(
a )
Said of intervals ,
when the lower tone is placed an octave higher ,
so that fifths become fourths ,
thirds sixths ,
etc .
(
b )
Said of a chord ,
when one of its notes ,
other than its root ,
is made the bass .
(
c )
Said of a subject ,
or phrase ,
when the intervals of which it consists are repeated in the contrary direction ,
rising instead of falling ,
or vice versa .
(
d )
Said of double counterpoint ,
when an upper and a lower part change places .
[
1913 Webster ]
9 . (
Geol .)
The folding back of strata upon themselves ,
as by upheaval ,
in such a manner that the order of succession appears to be reversed .
[
1913 Webster ]
10 . (
Chem .)
The act or process by which cane sugar (
sucrose ),
under the action of heat and acids or enzymes (
as diastase ),
is broken or split up into grape sugar (
dextrose ),
and fruit sugar (
levulose );
also ,
less properly ,
the process by which starch is converted into grape sugar (
dextrose ).
[
1913 Webster ]
Note :
The terms invert and inversion ,
in this sense ,
owe their meaning to the fact that the plane of polarization of light ,
which is rotated to the right by cane sugar ,
is turned toward the left by levulose .
[
1913 Webster ]
11 . (
Meteorology )
A reversal of the usual temperature gradient of the atmosphere ,
in which the temperature increases with increased altitude ,
rather than falling .
Called also temperature inversion .
Note :
This condition in the vicinity of cities can give rise to a severe episode of atmospheric pollution ,
as it inhibits normal circulation of the air .
[
PJC ]
12 . (
Electricity )
The conversion of direct current into alternating current ;
the inverse of rectification .
See {
inverted rectifier }.
[
PJC ]
13 . (
Genetics )
A portion of the genome in which the DNA has been turned around ,
and runs in a direction opposite to its normal direction ,
and consequently the genes are present in the reverse of their usual order .
[
PJC ]
25 Moby Thesaurus words for "
inversion ":
about -
face ,
addition ,
approximation ,
differentiation ,
division ,
equation ,
evolution ,
extrapolation ,
integration ,
interpolation ,
involution ,
multiplication ,
notation ,
practice ,
proportion ,
reduction ,
reversal ,
reverse ,
reversion ,
subtraction ,
transformation ,
turn ,
turnabout ,
turning ,
volte -
face
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