D−

Definition from Wiktionary, the free dictionary
Jump to: navigation, search

Translingual[edit]

Etymology[edit]

D +

Alternative forms[edit]

Symbol[edit]

D−

  1. (chemistry) the first negative ion of deuterium

Coordinate terms[edit]

  • 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[edit]

Pronunciation[edit]

Noun[edit]

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[edit]