LGT RELEASED WITH 2 MEL ITEMS IMPROPERLY DEFERRED.

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I RELEASED A FLT WITH 2 MEL'S ON DEFERRAL. THE FIRST WAS AN ILS NAV (LOC). THERE ARE 2 INSTALLED AND 1 REQUIRED. THE SECOND MEL WAS THE GPWS. THERE IS 1 INSTALLED AND 0 REQUIRED. THE REMARKS SECTION OF MEL STATES 'MAY BE INOP PROVIDED: A) 2 VHF NAV SYS OPERATE NORMALLY; AND B) REPAIRS ARE MADE WITHIN 2 FLT DAYS.' I THOUGHT THE FLT COULD BE RELEASED WITH BOTH MEL'S BECAUSE THE GS; NOT THE LOC; PORTION OF THE VHF NAV SYS FEEDS THE GPWS. BOTH GS SYS WERE OPERATING. ALSO; THE ACFT HAD BEEN RELEASED ON THE IMMEDIATELY PREVIOUS LEG OF THE FLT WITH BOTH MEL'S ON THAT RELEASE. THAT FACT CONTRIBUTED TO MY THINKING THAT IT WAS OK TO RELEASE MY LEG OF THE FLT WITH BOTH MEL'S DEFERRED. I THINK THE LANGUAGE IN MEL IS VAGUE ENOUGH THAT DISPATCHER; MAINT CTLRS AND FLCS DID NOT THINK IT WAS A PROB TO HAVE BOTH MEL'S ON THE SAME RELEASE. SOME DISPATCHERS IN OUR OFFICE BELIEVE THAT BOTH MEL'S CANNOT BE ON THE SAME RELEASE. I NOW AM OF THE OPINION THAT THEY ARE RIGHT. I HAVE ASKED THE DISPATCH AND MAINT CTL DEPTS TO REVIEW MEL AND POSSIBLY CHANGE THE WORDING TO MAKE THE INTENT OF THE MEL MORE CLR.