Definition of establish

• a. - To make stable or firm; to fix immovably or firmly; to set (a thing) in a place and make it stable there; to settle; to confirm.
• a. - To appoint or constitute for permanence, as officers, laws, regulations, etc.; to enact; to ordain.
• a. - To originate and secure the permanent existence of; to found; to institute; to create and regulate; -- said of a colony, a state, or other institutions.
• a. - To secure public recognition in favor of; to prove and cause to be accepted as true; as, to establish a fact, usage, principle, opinion, doctrine, etc.
• a. - To set up in business; to place advantageously in a fixed condition; -- used reflexively; as, he established himself in a place; the enemy established themselves in the citadel.