Definition of "space out"

space out

verb
third-person singular simple present spaces out, present participle spacing out, simple past and past participle spaced out
1. (transitive) To position (objects, people etc.) at regular intervals with a calculated space between them.
  Quotations
  Dion's first Las Vegas residency […] went on from 2003 to 2007, with a total of 714 shows […] [Her] second residency was more spaced out, with 427 shows. This allowed Dion to tour internationally during the pockets of time when she wasn't performing in Vegas.
  2022 October 5, Lauren Harby, “What We Know About Celine Dion's Health Battle”, in The List‎
2. (intransitive, idiomatic) To become distracted or disoriented; to lose attention or focus.
  Quotations
  Well, I generally come in at least fifteen minutes late, ah, I use the side door - that way Lumbergh can't see me, heh heh - and, uh, after that I just sorta space out for about an hour.
  1999, Mike Judge, Office Space (motion picture), spoken by Peter Gibbons (Ron Livingston)