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secondhand smoke

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noun
  1. smoke from a cigarette, cigar, or pipe that is involuntarily inhaled, especially by nonsmokers.
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Origin of secondhand smoke

First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
secondhand smoke in Medicine

secondhand smoke

(sĕk′ənd-hănd′)
n.
  1. Cigarette, cigar, or pipe smoke that is inhaled unintentionally by nonsmokers and is injurious to their health if inhaled regularly over a long period of time.passive smoke
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.