Dictionary

sidestream

adjective side·stream \-ˌstrēm\

Definition of SIDESTREAM

:  relating to or being tobacco smoke that is emitted from the lighted end of a cigarette or cigar

First Known Use of SIDESTREAM

1951
Medical Dictionary

sidestream

adjective side·stream \ˈsīd-ˌstrēm\

Medical Definition of SIDESTREAM

:  relating to or being tobacco smoke that is emitted from the lit end of a cigarette or cigar—compare mainstream

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