DBM or dbm may refer to: Science and technology[edit] dBm, a unit for power measurement DBM (computing), family of key-value database engines including dbm, ndbm, gdbm, and Berkeley DB Database Manager (DBM), a component of 1987's Extended Edition v1.0 release of IBM's OS/2 operating system Dibenzoylmethane, an aromatic diketone: 1,3-diphenylpropane-1,3-dione Dibromomethane, a halomethane Differen