Discursion

• (n.) The act of discoursing or reasoning; range, as from thought to thought.
Found on http://thinkexist.com/dictionary/meaning/discursion/

Discursion

Dis·cur'sion noun [ Late Latin discursio a running different ways. See Discourse .] The act of discoursing or reasoning; range, as from thought to thought. Coleridge.
Found on http://www.encyclo.co.uk/webster/D/80
No exact match found