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.
Definition of scan for English Language Learners. : 1  to look at (something) carefully usually in order to find someone or something. : 2  to look over or read (something) quickly. : 3  to look at the inside of (something) by using a special machine.