ab

1 of 6

noun (1)

: an abdominal muscle
usually used in plural

ab

2 of 6

abbreviation (1)

about
: 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
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
The crowd-pleaser was seriously nostalgic, packed with references to the original film, such as a cameo from Val Kilmer's Iceman and, yep, that famous beach volleyball scene filled with suntans, sunglasses, and abs for days. Raechal Shewfelt, EW.com, 7 Feb. 2025 This exercise strengthens the rectus abdominis (top layer of your abs muscles), transverse abdominis (innermost abs muscle), and obliques (the sides of your abdomen). Danielle Zickl, SELF, 7 Feb. 2025 The vocals, the dance moves, the dimples, the perfect smile, the abs. Stephanie Sengwe, People.com, 2 Feb. 2025 The fitness demonstrations will be line dancing for beginners at 10 a.m., followed by a class that focuses on abs, glutes and thighs at 10:30 a.m., Tai Chi Chuan at 11 a.m. and active total body conditioning at 11:30 a.m. Elizabeth Marie Himchak, San Diego Union-Tribune, 2 Jan. 2025 See all Example Sentences for ab 

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

Time Traveler
The first known use of ab was circa 1771

Dictionary Entries Near ab

Cite this Entry

“Ab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ab. Accessed 14 Feb. 2025.

Kids Definition

ab-

prefix
: from : away : departing from
abnormal
Etymology

Prefix

Latin ab- "from, away"

Medical Definition

ab

1 of 4 noun
: 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
: 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

More from Merriam-Webster on ab

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