Plegometer : plego METER (ple gomâ e ter) n. An instrument for measuring and recording the force of blows 13. Speedometer : speedo METER (spe domâ et er) n.
Best Answer: A certified letter is sent by a person or a business when they want to mail important information and be sure that it was received. It's not usually a good thing. Collection agencies send them, people involved in legal cases send them, etc... If you won a sweepstakes you would get them.
Certified mail is a way to mail a letter and receive a tracking number that allows you to know when it was delivered. For an additional fee you may also request a signed delâ¦ivery slip from the recipient which allows you to prove that they got the letter. This is very helpful when the person is trying to avoid you.