Definition of "offscreen"

offscreen

adjective
not comparable
1. Existing or happening outside the frame of the cinema or television screen
  Quotations
  In addition to racking up what looks like a substantial offscreen body count, the movie at one point offers an eight-second introduction for a sleazy used-car salesman character for the sole purpose of justifying Tripp and Creech laying waste to his inventory.
  2017 January 12, Jesse Hassenger, “A literal monster truck is far from the stupidest thing about Monster Trucks”, in The Onion AV Club‎
adverb
not comparable
1. Outside the frame of the cinema or television screen