Wiktionary

D−

Note that this entry uses the minus sign. See also D- which uses the hyphen.
See also: D- and Appendix:Variations of "d"

Translingual

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Alternative forms

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Etymology

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D + −

Symbol

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D−

  1. (chemistry) the first negative ion of deuterium

Coordinate terms

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  • D+ — the positive ion of deuterium
  • D — neutral deuterium radical
  • H− (H-) — the first negative ion of protium
  • H — neutral protium radical
  • H+ (p) — the positive ion of protium
  • T− (T-) — the first negative ion of tritium
  • T — neutral tritium radical
  • T+ — the positive ion of tritium
  • H− (H-) — the first negative ion of hydrogen
  • H — neutral hydrogen radical
  • H+ — the positive ion of hydrogen

English

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Pronunciation

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Noun

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D− (plural D−'s)

  1. An academic grade given by certain institutions. Slightly better than an F+ and slightly worse than a D. D minuses are the lowest passing grades.

Coordinate terms

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