Plasma TV is the method by which images are produced on a TV screen. Some other methods being the CRT and LED.
One classification of HDTVs is by their native screen resolution.
Most prominent brand of PlasmaTVs available in the market have native resolutions as given below or combinations there about :-
(a)The ED TV (840 X 180) resolution (now being discontinued by most brand).
(b)HDTV 1024 X 768 (720p found on many 42" plasma screens),
(c)HDTV 1366 X 768 (also a 720p or 1080i resolution found on 50", 60", & 65" plasma screens).
(d)Super high resolution 1920 X 1080 (1080p found in plasma screen sizes from 42" to 103").
Generally, a plasma TV screen is considered "High Definition" if the later number ( the one after the X multiply sign) of the resolution is at least 720 pixels.
To find out which Plasma TV is better for you peruse the hub given below