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inner space

British  

noun

  1. the environment beneath the surface of the sea

  2. the human mind regarded as being as unknown or as unfathomable as space

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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As does an intergenerational, odd-couple buddy tale with rings, lamps and mayhem played out across inner space, aka the American Midwest.

From The Wall Street Journal ● Aug. 14, 2026

Transporting listeners to outer space and inner space.

From New York Times ● Sep. 7, 2022

Their inner space is explored as evocatively as their outward demeanour.

From The Guardian ● Nov. 23, 2020

Borders “define an inner space in which one finds comfort and safety and for some, a sense of belonging.”

From Washington Post ● May 7, 2020

He liked the loneliness of inner space, the sense of being forgotten by the world.

From "The Hot Zone" by Richard Preston

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