* Alexander Graham Bell: The inventor of the telephone.
* "deci" (Latin): Meaning "tenth".
The decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, often power or intensity. It is named after Alexander Graham Bell because his work with sound and hearing laid the foundation for the development of the unit.
The "deci" prefix indicates that a decibel is one-tenth of a "bel," which is a unit named after Alexander Graham Bell himself. However, the "bel" is rarely used in practice, with the decibel being the preferred unit.
So, the word "decibel" is a combination of "deci" (one-tenth) and "bel" (in honor of Alexander Graham Bell).