1 noun MED of diseaseeipidéim fem2 c m ua cholera epidemiceipidéim chalair2 noun of sth undesirablethere's an epidemic of crime in the countrytá an choiriúlacht go rábach ar fud na tíre, tá coiriúlacht gan srian sa tír3 adjective widespreadthere was an epidemic spread of anti-social behaviourleath an iompraíocht fhrithshóisialta gan srianinefficiency in this organisation has reached epidemic proportionstá an neamhéifeachtúlacht go rábach san eagraíocht seo4 adjective MED diseaseeipidéimeach adj1the virus is epidemictá an víreas ina eipidéime