preoccupation (n.) Look up preoccupation at Dictionary.com
1550s, "state of occupying beforehand," from Latin praeoccupationem (nominative praeoccupatio) "a seizing beforehand, anticipation," noun of action from past participle stem of praeoccupare, from prae- "before" (see pre-) + occupare "seize" (see occupy). Meaning "mental absorption" is from 1854. Earlier its secondary sense was "bias, prejudice" (c.1600).