aa

or a'a

[ ah-ah ]

/ ˈɑ ɑ /

noun

basaltic lava having a rough surface.

Compare pahoehoe.

Origin of aa

First recorded in 1855–60, aa is from the Hawaiian word ʿaʿā

Words nearby aa

A2, A2 level, A3, A4, A5, aa, AAA, AAAA, A.A.A.L., A.A.A.S., Aachen

Definition for aa (2 of 7)

a̅a̅

or āa

Symbol.

(in prescriptions) ana².

Origin of a̅a̅

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

Definition for aa (3 of 7)

AA¹

abbreviation

administrative assistant.

Definition for aa (4 of 7)

AA²

Symbol.

a proportional shoe width size, narrower than A and wider than AAA.

the smallest proportional brassiere cup size.

a quality rating for a corporate or municipal bond, lower than AAA and higher than A.

Electricity. a battery size for 1.5-volt dry cells: diameter, 0.6 inch (1.4 centimeters); length, 2 inches (5 centimeters).

British. a designation for motion pictures certified as unsuitable for children under 14 unless accompanied by an adult.Compare A³ (def. 10), U⁵ (def. 6), X³ (def. 9).

Definition for aa (5 of 7)

a.a.

or aa

abbreviation

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

Definition for aa (6 of 7)

A.A.¹

or AA

[ ey-ey ]

/ ˈeɪˈeɪ /

abbreviation, noun

Alcoholics Anonymous.

Definition for aa (7 of 7)

A.A.²

abbreviation

antiaircraft.Also AA

Associate in Accounting.

Associate of Arts.

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for aa

Each word, from aa to za, gets its own two-page spread with a poem and a pic.
Well, La Ti Da: Stephin Merritt’s Winning Little Words of Scrabble|David Bukszpan|October 11, 2014|DAILY BEAST
A copy of AA Today, an Alcoholics Anonymous publication, rested atop the bureau.
Football Great Bob Suffridge Wanders Through the End Zone of Life|Paul Hemphill|September 6, 2014|DAILY BEAST
Alcoholics Anonymous (AA) has operated in Tehran for a number of years.
Iran’s Drinking Problem|IranWire|August 16, 2014|DAILY BEAST
He was raised by hippies and accompanied his father, a heroin addict, to AA meetings.
Shia LaBeouf’s Most Gangsta Move Yet: Getting Hauled Off In Handcuffs During Broadway’s ‘Cabaret’|Marlow Stern|June 27, 2014|DAILY BEAST

Refuge Recovery is a lot like an AA meeting minus mentions of Him, God, or a higher Power.
The Buddhist Punk Reforming Drug Rehab|Stephen Krcmar|June 16, 2014|DAILY BEAST
The barge of the chief of Aa turned toward the west, sailed an hour, and stopped at the river bank.
The Pharaoh and the Priest|Alexander Glovatski
Micel forlt Petrus and Andreas, aa heora ger one willan to hbbenne eallunga forlt, and agenum lustum wisc.
The Homilies of the Anglo-Saxon Church|lfric
The crank pin to which the connecting rod was attached is at Aa.
Kinematics of Mechanisms from the Time of Watt|Eugene S. Ferguson
Lasst Midsummer Day aa was on t' Shanmoor road, i' t' gloaming.
Robert Elsmere|Mrs. Humphry Ward
He has often preferred the simple alliteration (aa, bb) to the Old English system2.
The Translations of Beowulf|Chauncey Brewster Tinker

British Dictionary definitions for aa (1 of 3)

aa¹

/ (ˈɑːɑː) /

noun

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

Word Origin for aa

Hawaiian

British Dictionary definitions for aa (2 of 3)

aa²

abbreviation for

ana 1

British Dictionary definitions for aa (3 of 3)

abbreviation for

Alcoholics Anonymous

anti-aircraft

Architectural Association

(in Britain) Automobile Association

(in Britain) Advertising Association

symbol for

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for aa

abbr.

Alcoholics Anonymous

amino acid

aminoacyl

Scientific definitions for aa

[ ä′ä ]

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. See Note at pahoehoe.

单词	aa
释义	aa or a'a [ ah-ah ] / ˈɑ ɑ / noun basaltic lava having a rough surface. Compare pahoehoe. Origin of aa First recorded in 1855–60, aa is from the Hawaiian word ʿaʿā Words nearby aa A2, A2 level, A3, A4, A5, aa, AAA, AAAA, A.A.A.L., A.A.A.S., Aachen Definition for aa (2 of 7) a̅a̅ or āa Symbol. (in prescriptions) ana². Origin of a̅a̅ From the Greek word aná, with superscript bar representing the nasal consonant Definition for aa (3 of 7) AA¹ abbreviation administrative assistant. Definition for aa (4 of 7) AA² Symbol. a proportional shoe width size, narrower than A and wider than AAA. the smallest proportional brassiere cup size. a quality rating for a corporate or municipal bond, lower than AAA and higher than A. Electricity. a battery size for 1.5-volt dry cells: diameter, 0.6 inch (1.4 centimeters); length, 2 inches (5 centimeters). British. a designation for motion pictures certified as unsuitable for children under 14 unless accompanied by an adult.Compare A³ (def. 10), U⁵ (def. 6), X³ (def. 9). Definition for aa (5 of 7) a.a. or aa abbreviation author's alteration. Also A.A., AA Definition for aa (6 of 7) A.A.¹ or AA [ ey-ey ] / ˈeɪˈeɪ / abbreviation, noun Alcoholics Anonymous. Definition for aa (7 of 7) A.A.² abbreviation antiaircraft.Also AA Associate in Accounting. Associate of Arts. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for aa Each word, from aa to za, gets its own two-page spread with a poem and a pic. Well, La Ti Da: Stephin Merritt’s Winning Little Words of Scrabble\|David Bukszpan\|October 11, 2014\|DAILY BEAST A copy of AA Today, an Alcoholics Anonymous publication, rested atop the bureau. Football Great Bob Suffridge Wanders Through the End Zone of Life\|Paul Hemphill\|September 6, 2014\|DAILY BEAST Alcoholics Anonymous (AA) has operated in Tehran for a number of years. Iran’s Drinking Problem\|IranWire\|August 16, 2014\|DAILY BEAST He was raised by hippies and accompanied his father, a heroin addict, to AA meetings. Shia LaBeouf’s Most Gangsta Move Yet: Getting Hauled Off In Handcuffs During Broadway’s ‘Cabaret’\|Marlow Stern\|June 27, 2014\|DAILY BEAST Refuge Recovery is a lot like an AA meeting minus mentions of Him, God, or a higher Power. The Buddhist Punk Reforming Drug Rehab\|Stephen Krcmar\|June 16, 2014\|DAILY BEAST The barge of the chief of Aa turned toward the west, sailed an hour, and stopped at the river bank. The Pharaoh and the Priest\|Alexander Glovatski Micel forlt Petrus and Andreas, aa heora ger one willan to hbbenne eallunga forlt, and agenum lustum wisc. The Homilies of the Anglo-Saxon Church\|lfric The crank pin to which the connecting rod was attached is at Aa. Kinematics of Mechanisms from the Time of Watt\|Eugene S. Ferguson Lasst Midsummer Day aa was on t' Shanmoor road, i' t' gloaming. Robert Elsmere\|Mrs. Humphry Ward He has often preferred the simple alliteration (aa, bb) to the Old English system2. The Translations of Beowulf\|Chauncey Brewster Tinker British Dictionary definitions for aa (1 of 3) aa¹ / (ˈɑːɑː) / noun a volcanic rock consisting of angular blocks of lava with a very rough surface Word Origin for aa Hawaiian British Dictionary definitions for aa (2 of 3) aa² abbreviation for ana 1 British Dictionary definitions for aa (3 of 3) AA abbreviation for Alcoholics Anonymous anti-aircraft Architectural Association (in Britain) Automobile Association (in Britain) Advertising Association symbol for (in Britain, formerly) a film that may not be shown publicly to a child under fourteen Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to aa family, safety net, therapy, encounter group, friends, support system, 12-step Medical definitions for aa AA abbr. Alcoholics Anonymous amino acid aminoacyl The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for aa aa [ ä′ä ] 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. See Note at pahoehoe. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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aa

or a'a

noun

Origin of aa

Words nearby aa

Definition for aa (2 of 7)

or āa

Symbol.

Origin of a̅a̅

Definition for aa (3 of 7)

abbreviation

Definition for aa (4 of 7)

Symbol.

Definition for aa (5 of 7)

or aa

abbreviation

Definition for aa (6 of 7)

or AA

abbreviation, noun

Definition for aa (7 of 7)

abbreviation

Example sentences from the Web for aa

British Dictionary definitions for aa (1 of 3)

noun

Word Origin for aa

British Dictionary definitions for aa (2 of 3)

abbreviation for

British Dictionary definitions for aa (3 of 3)

abbreviation for

symbol for

Words related to aa

Medical definitions for aa

abbr.

Scientific definitions for aa