vaping — ONAD

vaping /ˈveɪpɪŋ/

▸ noun the action or practice of inhaling and exhaling vapor containing nicotine and flavoring produced by a device designed for this purpose:

there is concern that young people may take up vaping as a less harmful alternative to smoking

[as modifier] an online forum for vaping enthusiasts.

– ORIGIN 1980s (in reference to the use of an experimental ‘noncombustible’ cigarette): from vapor or vaporize.