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Adjective: keto  'kee-tow
Usage: informal
  1. Relating to or conforming to a ketogenic diet
    "She's been following a keto lifestyle for months"
Noun: keto  'kee-tow
Usage: informal
  1. A high-fat, very-low-carbohydrate diet that forces the body to burn fats rather than carbohydrates, inducing a state of ketosis
    "The keto was originally developed to treat epilepsy in children"; "He's been on keto for six months";
    - keto diet, ketogenic diet

Encyclopedia: Keto