No - only a piece of it - doesn't even need to be 50% or more - as long as the umpire sees ANY part of it in the zone its a strike
Your strike zone in baseball is from your chest to your knees and the width of home plate.
the strike zone is wherever the umpire says
Assuming you mean in baseball: The number of pitches in the strike zone versus the number of pitches outside the strike zone.
When a pitcher throws a ball over any part of home plate before the catcher catches the ball.
A ball in base ball is a ball outside of the strike zone. The strike zone is from mid-chest to knees and over home plate. Any ball inside the strike zone is a strike.
The strike zone
Traditionally, the strike zone extends from the waist to the letters of the team.
It is called a "ball"
Strike Zone The strike zone is from the knee to shoulder of the batting softball player. The strike zone also extends as wide as a normal swing. A strike is called if the ball passes through the strike zone and reaches the catcher. The softball umpire will also call a strike if a batter swings and misses at a pitch outside the strike zone. Three strikes result in a batter being called out by the softball umpire. A ball is called for all pitches that miss the strike zone. Four balls allow a batter to walk to first base uncontested. Outfield These 3 zones are short, middle, and long. In the outfield.
The strike zone is a box that is the width of home plate, and the length of the space between the batter's chest and knees.
It's called a Ball.
The "strike zone" is baseball is different with each player. It is determined thus: When a batter takes his natural stance at the plate, the "strike zone" is the area over home plate between the batter's arm pits and the top of his knees. Many umpires have their own determination of the "strike zone", but this is what it is suppose to be.