Db

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Db,

symbol for the element dubniumdubnium
, artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 268; m.p., b.p., and sp. gr. unknown; valence +5.
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dB

(physics)

dB(A)

A unit of sound-level; a reading taken on the A-scale of a sound-level meter.

decibel

The unit in which the level, 4 of various acoustical quantities is expressed.

DB