D-sub

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    an electrical connector with two or more rows of pins or sockets surrounded by a D-shaped metal shield

    "Some serial ports use a 25-contact D-sub, but with few exceptions, a 25-pin serial D-sub on a PC is male, with the female connector on the cable—the reverse of the parallel-port convention. (Other serial ports use 9-pin D-subs instead.)"

Synonyms

All synonyms
d-subminiature

Example

More examples

"Some serial ports use a 25-contact D-sub, but with few exceptions, a 25-pin serial D-sub on a PC is male, with the female connector on the cable—the reverse of the parallel-port convention. (Other serial ports use 9-pin D-subs instead.)"

Etymology

Clipping of D-subminiature, from the Cannon part numbering system where such connectors’ designations are prefixed with D.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.