Plate appearances per strikeout is a basic ratio determined by dividing a player's total plate appearances by his number of strikeouts. Hitters who don't strike out very much will have high PA/SO marks.
PA/SO is not a great tool for evaluating the overall abilities of a hitter. There are some very good hitters who strike out frequently and some poor hitters who hardly strike out at all. But PA/SO can be a useful tool for the opposition, as it tells them which hitters are adept at putting the ball in play -- which could be an important factor, given the game situation.
In A Call
"offensive strikeout rate"