Shortly after finishing Insomnia (2002), Nolan wrote an 80-page treatment about `dream stealers` envisioning a horror film inspired by lucid dreaming and presented the idea to Warner Bros. Feeling he needed to have more experience with large-scale film production, Nolan retired the project and instead worked on Batman Begins (2005), The Prestige..... Found on http://en.wikipedia.org/wiki/Inception
In·cep'tion noun [ Latin inceptio , from incipere to begin; prefix in- in + capere to take. See Capable .] 1. Beginning; commencement; initiation. Bacon. « Marked with vivacity of inception , apathy of progress, and prematureness of de... Found on http://www.encyclo.co.uk/webster/I/31
beginning; start; commencement. · · the act of graduating or earning a university degree, usually a master's or doctor's degree, esp. at Cambridge University. · the graduation ceremony; commencement. Found on https://www.infoplease.com/dictionary/inception