The Spanish word 'partida' comes from the Latin past participle 'partitus' meaning 'divided', which derived from the Latin verb 'partire' meaning 'to divide'. The Latin verb 'partire' itself came from the Latin noun 'pars' meaning 'part'. The meaning evolved from the basic concept of division or separation to specifically refer to a 'departure' (separating from a place), as well as taking on additional meanings like 'game' (as in a match or contest) and 'entry' (as in an accounting or record entry).

Several common Spanish words share this Latin root, including 'parte' (part), 'partir' (to leave/depart), and 'partido' (game/match/political party). All these words maintain connections to the original concept of division or separation: 'parte' refers to a divided piece, 'partir' emphasizes the act of separating from somewhere, and 'partido' can refer to either a divided group (political party) or a competitive match that divides participants into opposing sides.

English speakers can recognize this etymology in words like 'part', 'partition', 'party', and 'depart', all of which come from the same Latin root 'pars/partire'. The connection is clear in how 'depart' relates to the Spanish 'partida' meaning 'departure', both referring to separation from a place. Similarly, 'party' (like Spanish 'partido') can refer to both a social/political group and a game or celebration, all stemming from the idea of a part or division from a whole.