- under or as if under the influence of a drug
- distracted, inattentive, dazed, etc.
The definition of spaced out is to be confused or distracted.
An example of spaced out is the way a person acts when they have taken strong cold medicine.
Stupefied or disoriented from or as if from a drug.
(comparative more spaced-out, superlative most spaced-out)
- Defend yourself from an onslaught of asteroids and alien ships in this spaced-out title.
- "How's your spaced-out heroine doing?" he asked.