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
Dana Santas, CNN, 12 Jan. 2025
On Tuesday, Jan 7, the influencer, 28, celebrated uploading his first YouTube video in nearly three years by giving his fans a view of his year-long fitness transformation that gave him six-pack abs.
—Ingrid Vasquez, People.com, 8 Jan. 2025
Gestating in the same uterus as Zac Efron and showing off his abs on Instagram.
—Brian Moylan, Vulture, 6 Jan. 2025
Supermodel, Heidi Klum, walked the carpet in an ethereal green gown with a semi-sheer skirt and peek-a-boo cutouts on her abs.
—Lori A Bashian Fox News, Fox News, 6 Jan. 2025
See all Example Sentences for ab 
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Noun
Your core is an interconnected group of muscles that includes all your abs — not just your rectus abdominis, the long vertical muscle that can appear as a visible six-pack in people with low body fat.
—Dana Santas, CNN, 12 Jan. 2025
On Tuesday, Jan 7, the influencer, 28, celebrated uploading his first YouTube video in nearly three years by giving his fans a view of his year-long fitness transformation that gave him six-pack abs.
—Ingrid Vasquez, People.com, 8 Jan. 2025
Gestating in the same uterus as Zac Efron and showing off his abs on Instagram.
—Brian Moylan, Vulture, 6 Jan. 2025
Supermodel, Heidi Klum, walked the carpet in an ethereal green gown with a semi-sheer skirt and peek-a-boo cutouts on her abs.
—Lori A Bashian Fox News, Fox News, 6 Jan. 2025
See all Example Sentences for ab
Dictionary Entries Near ab
Cite this Entry
“Ab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ab. Accessed 21 Jan. 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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