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

That includes your back muscles and the muscles along the sides of your trunk, as well as your abs. — Angela Haupt, Time, 10 Nov. 2026

The shawl left much of Klum's torso exposed, showing off her toned abs and slim figure. — Lori A Bashian, FOXNews.com, 11 Oct. 2026

Her shrunken two-piece skirt suit—the jacket cropped to reveal her abs, the skirt extra-mini—perfectly encapsulated the cartoonish silhouette that Barbie so often rocks. — Christian Allaire, Vogue, 7 Oct. 2026

Brace your abs and glutes, keeping your ribs and pelvis stacked. — Jakob Roze, HEALTH, 29 Sep. 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