Page "Analog television" Paragraph 12

For this reason many people refer to any 625 / 25 type signal as " PAL " and to any 525 / 30 signal as " NTSC ", even when referring to digital signals, for example, on DVD-Video which don't contain any analog color encoding, thus no PAL or NTSC signals at all.

Even though this usage is common, it is misleading as that is not the original meaning of the terms PAL / SECAM / NTSC.