cold sores go through several stages and generally last anywhere from one to three weeks the first symptom you notice will probably be a tingling or itching sensation on your lips chin nose or cheek this is a sign that a cold sore is forming this stage lasts one or two days after which a blister or cluster of blisters will form
Scanner (radio) A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.
Medical Definition of scan. 1  1: the act or process of scanning. 2  2a: a depiction (as a photograph) of the distribution of a radioactive material in something (as a bodily organ)b: an image of a bodily part produced (as by computer) by combining ultrasonographic or radiographic data obtained from several angles or sections.