homology

1. The quality or condition of being homologous.
2. A homologous relationship or correspondence.
3. Chemistry
   a. The relation of the elements of a periodic family or group.
   b. The relation of the organic compounds forming a homologous series.
4. Mathematics A topological classification of configurations into distinct types that imposes an algebraic structure or hierarchy on families of geometric figures.

Origin:

Origin: Greek homologiā, agreement

Origin: , from homologos, agreeing; see homologous