AA

¹

abbreviation for

1. administrative assistant.

A.A.

²

or AA

[ ey-ey ]

abbreviation for

1. Alcoholics Anonymous.

AA

³

Symbol.

1. a proportional shoe width size, narrower than A and wider than AAA.
2. the smallest proportional brassiere cup size.
3. a quality rating for a corporate or municipal bond, lower than AAA and higher than A.
4. Electricity. a battery size for 1.5-volt dry cells: diameter, 0.6 inch (1.4 centimeters); length, 2 inches (5 centimeters).
5. British. a designation for motion pictures certified as unsuitable for children under 14 unless accompanied by an adult. Compare A ³( def 10 ), U ⁵( def 6 ), X ³( def 9 ).

A.A.

⁴

abbreviation for

1. antiaircraft. Also AA
2. Associate in Accounting.
3. Associate of Arts.

aa

⁵

or a·'a, 'a·'a

[ ah-ah ]

noun

1. basaltic lava having a rough surface.

a̅a̅

⁶

or āa

Symbol.

1. (in prescriptions) ana ².

a.a.

⁷

or aa

abbreviation for

1. author's alteration. Also A.A., AA

aa

¹

abbreviation for

1. ana ¹

AA

²

abbreviation for

1. Alcoholics Anonymous
2. anti-aircraft
3. Architectural Association
4. (in Britain) Automobile Association
5. (in Britain) Advertising Association

symbol for

1. (in Britain, formerly) a film that may not be shown publicly to a child under fourteen

aa

³

/ ˈɑːɑː /

noun

1. a volcanic rock consisting of angular blocks of lava with a very rough surface

aa

/ ä′ä /

1. A type of lava having a rough, jagged surface. It is relatively slow moving in its molten state, advancing in the form of massive blocks with fissured and angular surfaces that ride on a viscous interior. The blocks range in size between the size of a football and the size of a house.
2. See Note at pahoehoe

Word History and Origins

Origin of AA¹

First recorded in 1855–60; from Hawaiian ʿaʿā

Origin of AA²

From the Greek word aná, with superscript bar representing the nasal consonant

Word History and Origins

Origin of AA¹

Hawaiian

Example Sentences

Each word, from aa to za, gets its own two-page spread with a poem and a pic.

From The Daily Beast

A copy of AA Today, an Alcoholics Anonymous publication, rested atop the bureau.

From The Daily Beast

Alcoholics Anonymous (AA) has operated in Tehran for a number of years.

From The Daily Beast

One former alcoholic, Alireza, regularly attends AA meetings.

From The Daily Beast

He was raised by hippies and accompanied his father, a heroin addict, to AA meetings.

From The Daily Beast

All this unseemly rage and row about such aa Dorcas, I never saw you carry on like this before.

From Project Gutenberg

Square off both ends and drill two small holes in the outside surface of each end, at AA, about 3/8 in.

From Project Gutenberg

Many words written with would now use simple e, and the letter (pronounced like continental o) was written aa.

From Project Gutenberg

Some Mittau noises came across the Aa, the rumble of wheels, and a barking of dogs.

From Project Gutenberg

Also provision should be made for taking up the "slack" (as by the screws AA, Fig. 42).

From Project Gutenberg