ab

1 of 6

noun (1)

ˈab 

plural abs

: an abdominal muscle

—usually plural

ab

2 of 6

abbreviation (1)

about

Ab

3 of 6

noun (2)

ˈäb  ˈäv  ˈȯv 

: the 11th month of the civil year or the 5th month of the ecclesiastical year in the Jewish calendar see Months of the Principal Calendars Table

AB

4 of 6

noun (3)

ˈā-ˈbē 

: the one of the four ABO blood groups characterized by the presence of antigens designated by the letters A and B and by the absence of antibodies against these antigens

AB

5 of 6

abbreviation (2)

1

able seaman; able-bodied seaman

2

abort; abortion

3

airborne

4

airman basic

5

Alberta

6

[New Latin artium baccalaureus] bachelor of arts

ab-

6 of 6

prefix

: from : away : off

abaxial

Examples of ab in a Sentence

Recent Examples on the Web

Noun

Baring her abs, the only other accessories by her side are a slim black belt and a tiny watch. — Daisy Maldonado, InStyle, 16 Sep. 2026

Reese Witherspoon and Ryan Phillippe’s son, Deacon Phillippe, was in here the other day bearing his prosthetic-looking abs and his famous mother’s face. — Julissa James, Los Angeles Times, 10 Sep. 2026

With only Lucien, a freshly out twink with more heart than abs, still by his side, Jim must race to find a cure before the disease erases the community that once worshipped him. — Leo Barraclough, Variety, 2 Sep. 2026

The iconic '90s supermodel sported a black one-piece bathing suit with a plunging neckline and a low-cut back, while her daughter stunned in a red bikini with a white paisley print that showed off her toned abs. — Lori A Bashian, FOXNews.com, 16 Aug. 2026

Word History

Etymology

Noun (2)

Hebrew Ābh

Prefix

Middle English, from Anglo-French & Latin; Anglo-French, from Latin ab-, abs-, a-, from ab, a — more at of

First Known Use

Noun (1)

1956, in the meaning defined above

Noun (2)

circa 1771, in the meaning defined above

Noun (3)

1927, in the meaning defined above

Phrases Containing ab

• ab initio
• ab ovo

Rhymes for ab

• cab
• crab
• dab
• drab
• fab
• gab
• grab
• jab
• lab
• mab
• nab
• rab

Kids Definition

ab-

prefix

: from : away : departing from

abnormal

Etymology

Prefix

Latin ab- "from, away"

Medical Definition

ab

1 of 4 noun

ˈab 

: abdominal

—usually used in plural

highly developed abs

ab exercises

ab

2 of 4 abbreviation

1

or AB abort; abortion

2

about

AB

3 of 4 noun

ˈā-ˈbē 

: the one of the four ABO blood groups characterized by the presence of antigens designated by the letters A and B and by the absence of antibodies against these antigens

AB

4 of 4 abbreviation

1

aid to blind

2

[Latin artium baccalaureus] bachelor of arts