D+

Alternative forms

 * D+

Etymology
D + +

Symbol

 * 1)  the positive ion of deuterium; a deuteron

Coordinate terms

 * D− (D-) &mdash; the first negative ion of deuterium
 * &mdash; neutral deuterium radical
 * H− (H-) &mdash; the first negative ion of protium
 * &mdash; neutral protium radical
 * H+ (p) &mdash; the positive ion of protium
 * T− (T-) &mdash; the first negative ion of tritium
 * &mdash; neutral tritium radical
 * T+ &mdash; the positive ion of tritium
 * H− (H-) &mdash; the first negative ion of hydrogen
 * &mdash; neutral hydrogen radical
 * H+ &mdash; the positive ion of hydrogen

Pronunciation

 * as "D plus"

Noun

 * 1) An academic grade given by certain institutions. Slightly better than a D and slightly worse than a C-.

Coordinate terms

 * D−, D