Plain English Meaning
The lowest altitude you're allowed to descend to on this type of GPS approach with vertical guidance. When you reach it, you either see the runway and land, or you go around.
Full Definition
The Decision Altitude published for an RNAV (GPS) approach flown using both lateral guidance (LNAV) and vertical guidance (VNAV). At this altitude during the final approach, the pilot must either have the required visual references for the runway in sight and continue to land, or execute a missed approach. LNAV/VNAV minimums are higher than LPV minimums but lower than LNAV-only () , and they require - equipment capable of providing vertical guidance, such as or a .