CET or cet may refer to:
Cetacea (/sᵻˈteɪʃə/) are a widely distributed and diverse clade of aquatic mammals that today consists of the whales, dolphins, and porpoises.
Cetirizine /sɛˈtɪrᵻziːn/ (trade names Zirtec, Zyrtec, Reactine) is a second-generation antihistamine used in the treatment of hay fever, allergies, angioedema, and urticaria.
Cetinje (Montenegrin Cyrillic: Цетиње [pronounced [ t͡sětiɲe]]), is a city and Old Royal Capital (Montenegrin: Prijestonica / Приjестоница) of Montenegro.
Cetacean intelligence refers to the cognitive capabilities of the Cetacea order of mammals. This order includes whales, porpoises, and dolphins.
Cetacean surfacing behaviour is a group of behaviours demonstrated by the Cetacea infraorder when they come to the water's surface to breathe.
Cetacean stranding is a phenomenon in which cetaceans strand themselves on land, usually on a beach. Beached whales often die due to dehydration, collapsing under their own weight, or drowning when high tide covers the blowhole.
Cetuximab (INN) is an epidermal growth factor receptor (EGFR) inhibitor used for the treatment of metastatic colorectal cancer, metastatic non-small cell lung cancer and head and neck cancer.
Cetacean bycatch is the incidental capture of non-target cetacean species such as dolphins, porpoises, and whales by fisheries.
Cetrimonium bromide [(C16H33)N(CH3)3Br; cetyltrimethylammonium bromide; hexadecyltrimethylammonium bromide; CTAB] is a quaternary ammonium surfactant.