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• dd
  dd

  abbreviation

  today's date.
• DD
  DD

  abbreviation

  data deficient.
• dd.
  dd.

  abbreviation

  delivered.
• D/D
  D/D

  abbreviation

  days after date.
• D.D.
  D.D.

  abbreviation

  demand draft.

dd

¹ American  

abbreviation

1. Law. today's date.

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dd ² American  

abbreviation

1. degree-day.

2. delayed delivery.

3. delivered.

4. demand draft.

5. double-deck.

6. Shipbuilding. dry dock.

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DD ³ American  

abbreviation

1. Biology, Ecology. data deficient.

2. damage dealer: (in a video game) a category of job classes in a role-playing game, best suited to inflict large amounts of damage to an enemy: Also DPS

   If you need a DD, I have a level 49 Warrior, or a level 45 Hunter—if a ranged attack would be better.

3. dear/darling daughter (used, especially by women, in digital communications to refer to one's daughter).

   DD moving into her own apt today!

4. designated driver.

5. Department of Defense.

6. dishonorable discharge.

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dd. ⁴ American  

abbreviation

1. delivered.

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D/D ⁵ American  

abbreviation

Commerce.

1. days after date.

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D.D. ⁶ American  

abbreviation

1. demand draft.

2. Doctor of Divinity.

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DD British  

abbreviation

1. Also: dd.  direct debit

2. Doctor of Divinity

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Etymology

Origin of dd

From Latin dē datō

Example Sentences

The author does not think much of this simple "dd reaction."

From Time Magazine Archive

The gametes they produce are D+d and d+d, and the fertilisations are therefore Dd, Dd, dd, dd, or heterozygote dominants and pure recessives in equal numbers.

From Hormones and Heredity by Cunningham, J. T.

Node:dd, Next:DDT, Previous:day mode, Up:= D = dd /dee-dee/ vt.

From The Jargon File, Version 4.2.2, 20 Aug 2000 by Steele, Guy L.

In a furnace with lateral fire-place, cc are the heating cylinders, and dd the cooling cylinders.

From Scientific American Supplement, No. 288, July 9, 1881 by Various

As we see, the consonants in the rhyme-words were merely related: l, r, n, ng, m, dh, gh, bh, mh, ch, th, f could rime together just as could gg, dd, bb.

From The Glories of Ireland by Lennox, P. J.