[1] : The Collaborative International Dictionary of English v.0.48

homology \homol"ogy\, 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
see also:
homologous homotypy homogeny ch4 c2h6 c3h8 
heterology general homology serial homology special homology 

Homology >> H Words
Homology, definition of term: Homology
homology_pag1.html

General >> G Words
General, definition of term: General
general_pag1.html

General Practit >> G Words
General Practit, definition of term: General Practit
general+practit_pag1.html

General Protect >> G Words
General Protect, definition of term: General Protect
general+protect_pag1.html

General Public >> G Words
General Public, definition of term: General Public
general+public_pag1.html

General Manager >> G Words
General Manager, definition of term: General Manager
general+manager_pag1.html

General Ledger >> G Words
General Ledger, definition of term: General Ledger
general+ledger_pag1.html

General Court >> G Words
General Court, definition of term: General Court
general+court_pag1.html

General Assembl >> G Words
General Assembl, definition of term: General Assembl
general+assembl_pag1.html

General Electio >> G Words
General Electio, definition of term: General Electio
general+electio_pag1.html

Page 1 2 Next