Call the toll-free hotline at (800) 282-0880 during regular business hours (7:30 a.m. to 5:00 p.m.) Monday through Friday. If you're having trouble managing your home energy costs, we can help. Below is a list of programs that improve your home's efficiency and help manage home energy bills.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  cipher, cypher(noun) a message written in a secret code. 2  zero, 0, nought, cipher, cypher(noun) a mathematical element that when added to another number yields the same number.
The Caesar cipher is one of the earliest known and simplest ciphers. It is a type of substitution cipher in which each letter in the plaintext is 'shifted' a certain number of places down the alphabet. For example, with a shift of 1, A would be replaced by B, B would become C, and so on.