D−

See also: D- and Appendix:Variations of "d"

Translingual

Alternative forms

• D⁻
• D^-

Etymology

D + −

Symbol

D−

1. (chemistry) the first negative ion of deuterium

Coordinate terms

• 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

Pronunciation

• as "D minus"

Noun

D− (plural D−'s)

1. An academic grade given by certain institutions. Slightly better than an F+ and slightly worse than a D.

Coordinate terms

• D+, D