Spacer meaning

A person who works in space.
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An object inserted to hold a space open in a row of items, e.g. beads or printed type.
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(slang) A forgetful person.
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(medicine) A type of add-on device used by an asthmatic person to increase the effectiveness of a metered-dose inhaler.
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Origin of spacer

  • space + -er
    From Wiktionary