| Noun | 1. | domino effect - the consequence of one event setting off a chain of similar events (like a falling domino causing a whole row of upended dominos to fall)consequence, effect, result, upshot, outcome, event, issue - a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event" | |