An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

The study of the properties of geometric figures that remain invariant under certain transformations, as bending or stretching. A circle is topologically equivalent to an ellipse (into which it can be deformed by stretching) and a sphere is equivalent to an ellipsoid.

From topo- combining form of Gk. topos "place" + → -logy.

Topošenâsi, from topo-, loan from Gk., as above, + šenâsi→ -logy.