Db Db

noun

a logarithmic unit of sound intensity; 10 times the logarithm of the ratio of the sound intensity to some reference intensity  ( dB, decibel )
a logarithmic unit of sound intensity; 10 times the logarithm of the ratio of the sound intensity to some reference intensity

a transuranic element  ( atomic number 105, Db, dubnium, element 105, hahnium )
a transuranic element