means The beginning or starting point of something — the moment a thing first comes into being.

from From Latin 'inceptio,' meaning 'a beginning,' built from 'incipere' ('to begin, take up') — itself a fusion of 'in-' (in, into) and 'capere' (to take, seize). So at its root, inception is literally the act of taking something up at the start. The word arrived in English by the 15th century as a sober term for origins; the 2010 film simply borrowed it and made it dream-deep.