Adjective
(topology, of two continuous maps) Such that there is a homotopy (a continuous deformation) taking one to the other.
f and g are homotopic.
(neuroscience) Having to do with or being a part of the correspondent region in the other brain hemisphere.
(phonetics, rare) Homorganic.
Source: en.wiktionary.org; Short map : See metric map ; Simply connected : A space is simply connected if it is path-connected and every loop is homotopic to a constant map. Source: Internet
; Contractible : A space X is contractible if the identity map on X is homotopic to a constant map. Source: Internet
In particular, a counterclockwise interchange by half a turn is not homotopic to a clockwise interchange by half a turn. Source: Internet