Dehydration: Excessive loss of body water. Diseases of the gastrointestinal tract that cause vomiting or diarrhea may lead to dehydration. There are a number of other causes of dehydration including heat exposure, prolonged vigorous exercise, kidney disease, and medications that cause voiding (diuretics). One clue to dehydration is a rapid drop in weight. A loss of over 10% (15 pounds in a person weighing 150 pounds) is considered severe.
In American the meaning of the name Lucas is: Light. The name Lucas is a Biblical baby name. In Biblical the meaning of the name Lucas is: Luminous, white. The name Lucas is an English baby name. In English the meaning of the name Lucas is: Form of Luke: light; illumination. The name Lucas is a Greek baby name. In Greek the meaning of the name Lucas is: Light giving. From Lucania (Lucania was a district of ancient Italy). The name Lucas is a Latin baby name. In Latin the meaning of the name Lucas is: Form of Luke 'light; illumination.
Last name: Luck. This notable surname derives from the given name Lucas, a Latin form of the Greek Loucas meaning man from Lucania. Lucania was a region of Southern Italy that was perhaps originally named in an Italic dialect with a word meaning bright, shining.