However, that particular doctor, the family physician, represents only one of the countless areas in which medical professionals work. In fact, there is a specific type of doctor for almost every major system located in the human body. Listed below are just thirty of the dozens of examples:
A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, muay thai, mixed martial arts, karate, some forms of taekwondo and other sports involving striking.
Computer Science. In design and printing, using a knockout is the opposite of overprinting. Instead of printing an element in one color on top of another color, the top element is knocked out of the base element so its true color shows. A knockout removes a portion of the bottom image.