db

Noun db has 2 senses

• db(n = noun.substance) atomic number 105, dubnium, element 105, hahnium - a transuranic element;
is a kind of chemical element, element

• db(n = noun.quantity) decibel - a logarithmic unit of sound intensity; 10 times the logarithm of the ratio of the sound intensity to some reference intensity;
is a kind of sound unit