Word.ws English Dictionary

aad

/ɑːd/

aad adjective: old. Also the initialism of active acoustic device.

Adjective

aad (comparative more aad, superlative most aad)

  1. (Geordie) old
    • He’s aad codger.

Proper noun capitalized: AAD

AAD

  1. (abbreviation, initialism) Initialism of American Academy of Dentists.
  2. (abbreviation, initialism) Initialism of American Academy of Dermatology.
  3. (abbreviation, initialism) Initialism of Australian Antarctic Division.
    • For the next four or five years, a special drill designed at the AAD will slice through the ice pulling up 3-metre cores at a time until the drill hits bedrock, almost 3km down. […] The idea to go chasing the world’s oldest ice was included in a 2013 report from Dr Tony Press, the former AAD...2023 January 15, Graham Readfearn, “Time tunnel: why an Australian expedition is drilling through 2.6km of Antarctic ice”, in The Guardian
  4. (abbreviation, initialism) Initialism of Azure Active Directory.

Noun capitalized: AAD

AAD (plural AADs)

  1. (abbreviation, initialism) Initialism of Aircraft Assignment Directive.
  2. (abbreviation, initialism) Initialism of automatic activation device.
  3. (abbreviation, initialism) Initialism of Anti-aircraft division.
  4. (abbreviation, initialism) Initialism of Army Air Defense.
  5. (abbreviation, initialism) Initialism of Airborne Assault Division.
  6. (abbreviation, historical, initialism) Initialism of Armored Automobile Detachment.

Also used as

aad is also the initialism of active acoustic device.

aad is also the initialism of advanced ammunition depot.

aad is also the initialism of alloxazine adenine dinucleotide.

aad is also the initialism of antibiotics-associated diarrhea.

Forms of aad

Adjective
comparativemore aad
superlativemost aad
Noun
pluralaads
pluralAADs

Origin of aad

Regional form of old (compare auld), from Northern Middle English ald (southern old).

Initialism.

Words formed from aad

Phrases with aad

Questions about aad

What does aad mean?
Aad means old.
What part of speech is aad?
Aad can be an adjective, a proper noun or a noun.
How do you pronounce aad?
Aad is pronounced /ɑːd/.

Words near aad in the dictionary

  1. AACU
  2. AACUBO
  3. AACUs
  4. AACV
  5. AACVs
  6. aad
  7. aad wife
  8. aad wives
  9. AADA
  10. AADAOPA
  11. AADAs

Source and license

Adapted from Wiktionary: aad (page history and authors); AAD (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “aad.” Word.ws, https://word.ws/aad. Based on Wiktionary, CC BY-SA 4.0.