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.
Encryption is the conversion of electronic data into another form, called ciphertext, which cannot be easily understood by anyone except authorized parties.