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
1
able seaman; able-bodied seaman
2
abort; abortion
3
airborne
4
airman basic
5
Alberta
6
[New Latin artium baccalaureus]
bachelor of arts
: from : away : off
abaxial
Examples of ab in a Sentence
Recent Examples on the Web
Dennis Harvey, Variety, 3 July 2025
Sorry to Skarsgård’s abs and Willem Dafoe’s enormous faux forehead, which must deal with second and third place, respectively.
—Jihane Bousfiha, Vulture, 2 July 2025
These muscles consist of the following three muscle groups: your lower abs, your iliopsoas muscles, which connect your spine to your hips and legs and your six adductor muscles in your hips and thighs, as described by the Cleveland Clinic website.
—Bruce Y. Lee, Forbes.com, 1 July 2025
The 6 God’s abs sent the internet into a frenzy as fans had plenty to say about the photo.
—Michael Saponara, Billboard, 30 June 2025
See All Example Sentences for ab
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Noun
Whereas Elliot remains something of a cipher, a manchild whose amply displayed abs have more definition than his character.
—Dennis Harvey, Variety, 3 July 2025
Sorry to Skarsgård’s abs and Willem Dafoe’s enormous faux forehead, which must deal with second and third place, respectively.
—Jihane Bousfiha, Vulture, 2 July 2025
These muscles consist of the following three muscle groups: your lower abs, your iliopsoas muscles, which connect your spine to your hips and legs and your six adductor muscles in your hips and thighs, as described by the Cleveland Clinic website.
—Bruce Y. Lee, Forbes.com, 1 July 2025
The 6 God’s abs sent the internet into a frenzy as fans had plenty to say about the photo.
—Michael Saponara, Billboard, 30 June 2025
See All Example Sentences for ab
Cite this Entry
“Ab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ab. Accessed 15 Jul. 2025.
Copy CitationMedical Definition
ab
2 of 4 abbreviation1
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 abbreviation1
aid to blind
2
[Latin artium baccalaureus]
bachelor of arts
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