An undertaking shall be deemed to have significant market power if, either individually or jointly with others, it enjoys a position equivalent to dominance, namely a position of economic strength affording it the power to behave to an appreciable extent independently of competitors, customers and ultimately consumers.
Measfar go bhfuil cumhacht shuntasach ag gnóthas sa mhargadh, leis féin nó i gcomhar le gnóthais eile, má tá staid aige atá coibhéiseach le ceannasacht, eadhon staid eacnamaíoch láidir a thugann an chumhacht dó feidhmiú neamhspleách go mór ar a chuid iomaitheoirí, ar a chuid custaiméirí, agus ar deireadh, ar a chuid tomhaltóirí.