1. the amount of air or empty space that is left above the contents of a container before it is sealed (= tightly closed)
   • ● Proper sample collection techniques include use of a glass tube with minimal headspace remaining after collection.

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2. (informal) the way you think or feel about something
   • ● Whenever you read a book, you're entering the writer's headspace.
3. (informal) time to think clearly without any pressure
   • ● I could do with a bit of headspace just to think about what I'm doing.

[TahlilGaran] English Dictionary ▲