1. (Tools) a piece of equipment for measuring the hardness of a material, in particular plastic or rubber. 2. (Units) the measurement of the hardness of a material, in particular plastic or rubber.
The DSM-5 was published on May 18, 2013, superseding the DSM-IV-TR, which was published in 2000.
The most significant were: 1  Digital Equipment Corporation with DSM (Digital Standard MUMPS). DSM-11 was superseded by VAX/DSM for the VAX/VMS platform, and that was ported to the Alpha in two variants: DSM for OpenVMS, and as DSM for Ultrix.