homology
n . 相同,异体同形,同族关系
相同,异体同形,同族关系
homology 透射
homology n 1 :
the quality of being similar or corresponding in position or value or structure or function Homology \
Ho *
mol "
o *
gy \,
n . [
Gr . ?
agreement .
See {
Homologous }.]
1 .
The quality of being homologous ;
correspondence ;
relation ;
as ,
the homologyof similar polygons .
[
1913 Webster ]
2 . (
Biol .)
Correspondence or relation in type of structure in contradistinction to similarity of function ;
as ,
the relation in structure between the leg and arm of a man ;
or that between the arm of a man ,
the fore leg of a horse ,
the wing of a bird ,
and the fin of a fish ,
all these organs being modifications of one type of structure .
[
1913 Webster ]
Note :
Homology indicates genetic relationship ,
and according to Haeckel special homology should be defined in terms of identity of embryonic origin .
See {
Homotypy },
and {
Homogeny }.
[
1913 Webster ]
3 . (
Chem .)
The correspondence or resemblance of substances belonging to the same type or series ;
a similarity of composition varying by a small ,
regular difference ,
and usually attended by a regular variation in physical properties ;
as ,
there is an homology between methane ,
{
CH4 },
ethane , {
C2H6 },
propane , {
C3H8 },
etc .,
all members of the paraffin series .
In an extended sense ,
the term is applied to the relation between chemical elements of the same group ;
as ,
chlorine ,
bromine ,
and iodine are said to be in homology with each other .
Cf . {
Heterology }.
[
1913 Webster ]
{
General homology } (
Biol .),
the higher relation which a series of parts ,
or a single part ,
bears to the fundamental or general type on which the group is constituted . --
Owen .
{
Serial homology } (
Biol .),
representative or repetitive relation in the segments of the same organism , --
as in the lobster ,
where the parts follow each other in a straight line or series . --
Owen .
See {
Homotypy }.
{
Special homology } (
Biol .),
the correspondence of a part or organ with those of a different animal ,
as determined by relative position and connection . --
Owen .
[
1913 Webster ]
42 Moby Thesaurus words for "
homology ":
accord ,
addition ,
adjunct ,
affairs ,
affiliation ,
affinity ,
alliance ,
approximation ,
assemblage ,
association ,
bond ,
closeness ,
combination ,
connectedness ,
connection ,
contiguity ,
contrariety ,
dealings ,
deduction ,
disjunction ,
filiation ,
intercourse ,
intimacy ,
junction ,
liaison ,
link ,
linkage ,
linking ,
mutual attraction ,
nearness ,
propinquity ,
proximity ,
rapport ,
relatedness ,
relation ,
relations ,
relationship ,
similarity ,
sympathy ,
tie ,
tie -
in ,
union
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