Meaning

verb set up or found

verb set up or lay the groundwork for

verb establish the validity of something, as by an example, explanation or experiment

originFrom Middle English establissen, from Old French establiss-, stem of some of the conjugated forms of establir, (Modern French établir), from Latin stabiliō, stabilīre, from stabilis (“firm, steady, stable”).

Etymology from Wiktionary, CC BY-SA 3.0