Excogitation

n.

1.

The act of excogitating; a devising in the thoughts; invention; contrivance.

Noun	1.	excogitation - thinking something out with care in order to achieve complete understanding of it
	2.	excogitation - the creation of something in the mind Synonyms: invention, innovation, conception, design

cerebration, contrive, devise, excogitate, forge, formulate, intellection, invent, mentation, thinking, thought