Answer:
The time signature (also known as meter signature, metre signature, or measure signature) is a notational convention used in Western musical notation to specify how many beats (pulses) are contained in each measure (bar), and which note value is equivalent to a beat.
OR
In music, a time signature tells you the meter of the piece you're playing. Composers decide the number of beats per measure early on and convey this information with a time signature. The two numbers in the time signature tell you how many beats are in each measure of music.
