Word.ws English Dictionary

headspace

/ˈhɛdspeɪs/

headspace noun: the space between the top of the contents of a container (such as a jar) and its seal (such as a lid).

Noun

headspace (countable and uncountable, plural headspaces)

  1. The space between the top of the contents of a container (such as a jar) and its seal (such as a lid).
    • Control of headspace is important for economic and technical reasons. Underfilling will contravene Weights and Measures legislation and may cause rusting in the headspace […]1997, S. D. Holdsworth, “Food Preservation Processes”, in M. D. Ranken, R. C. Kill, C. Baker, editors, Food Industries Manual, 24th edition, Blackie Academic and Professional, →ISBN, page 517
    Synonyms:
    headroom, ullage
  2. (informal) One's capacity for mental activity modeled as a physical space with limits.
    • Meronym: mindshare
    • It's like, I need to clear my headspace but I can't do that with him around because he's just ego, you know? He dumps on me. So that's it.1996, Andrew Cowan, Common Ground
    Synonyms:
    brainspace
  3. One's mental state or state of mind.
    • Many of us, as gays, have been in the same headspace as Maurice: longing, lonely, and scared.1971, Herb Spiers, “Maurice (review)”, in Body Politic, number 1, page 12
  4. (informal) A time and opportunity for reflection and thinking.
    • As a business owner, a truly effective business owner that is building a profitable business machine, you need headspace, thinking time, planning time, brainstorming time, education time, decision making time, questioning time and more thinking time.2011, Eric J. Gregory, Would You Like Profits, →ISBN
  5. The gap between the face of the bolt and the stopping surface for the cartridge.
  6. The gas phase in contact and in equilibrium with a nonvolatile liquid in a sample.
  7. (multiplicity slang) A place within a person (singlet or multiple) that they can visit or inhabit.

Verb

headspace (third-person singular simple present headspaces, present participle headspacing, simple past and past participle headspaced)

  1. (intransitive) To occupy a headspace.

Synonyms of headspace

All synonyms of headspace

Forms of headspace

Noun
pluralheadspaces
alternative formhead space
alternative formhead-space
Verb
third-person singular presentheadspaces
present participleheadspacing
past participleheadspaced
pastheadspaced

Origin of headspace

From head + space.

Questions about headspace

What does headspace mean?
Headspace means the space between the top of the contents of a container (such as a jar) and its seal (such as a lid).
What part of speech is headspace?
Headspace can be a noun or a verb.
How do you pronounce headspace?
Headspace is pronounced /ˈhɛdspeɪs/.
What is the plural of headspace?
The plural of headspace is headspaces.

Words near headspace in the dictionary

  1. headsits
  2. headslapper
  3. headslappers
  4. headsman
  5. headsmen
  6. headspace
  7. headspaced
  8. headspaces
  9. headspacing
  10. headspan
  11. headspans

Source and license

Adapted from Wiktionary: headspace (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-headspace.wav.

Cite this entry: “headspace.” Word.ws, https://word.ws/headspace. Based on Wiktionary, CC BY-SA 4.0.