California Code, Revenue and Taxation Code - RTC § 30121

(a) “Cigarettes” has the same meaning as in Section 30003, as it read on January 1, 1988.

(b) “Tobacco products” includes, but is not limited to, a product containing, made, or derived from tobacco or nicotine that is intended for human consumption, whether smoked, heated, chewed, absorbed, dissolved, inhaled, snorted, sniffed, or ingested by any other means, including, but not limited to, cigars, little cigars, chewing tobacco, pipe tobacco, or snuff, but does not include cigarettes.Tobacco products shall also include electronic cigarettes. Tobacco products shall not include any product that has been approved by the United States Food and Drug Administration for sale as a tobacco cessation product or for other therapeutic purposes where that product is marketed and sold solely for such approved use. Tobacco products does not include any food products as that term is defined pursuant to Section 6359.

(c) “Electronic cigarettes” means any device or delivery system sold in combination with nicotine which can be used to deliver to a person nicotine in aerosolized or vaporized form, including, but not limited to, an e-cigarette, e-cigar, e-pipe, vape pen, or e-hookah. Electronic cigarettes include any component, part, or accessory of such a device that is used during the operation of the device when sold in combination with any liquid or substance containing nicotine. Electronic cigarettes also include any liquid or substance containing nicotine, whether sold separately or sold in combination with any device that could be used to deliver to a person nicotine in aerosolized or vaporized form. Electronic cigarettes do not include any device not sold in combination with any liquid or substance containing nicotine, or any battery, battery charger, carrying case, or other accessory not used in the operation of the device if sold separately. Electronic cigarettes shall not include any product that has been approved by the United States Food and Drug Administration for sale as a tobacco cessation product or for other therapeutic purposes where that product is marketed and sold solely for such approved use. As used in this subdivision, nicotine does not include any food products as that term is defined pursuant to Section 6359.

(d) “Fund” means the Cigarette and Tobacco Products Surtax Fund created by Section 30122.